add installation demo and refine README.md, add development guide

Signed-off-by: N周鹏飞@yunify <pengfeizhou@yunify.com>

README.md

@@ -2,6 +2,8 @@
 [![License](http://img.shields.io/badge/license-apache%20v2-blue.svg)](https://github.com/KubeSphere/KubeSphere/blob/master/LICENSE)
 [![Build Status](https://travis-ci.org/kubesphere/kubesphere.svg?branch=master)](https://travis-ci.org/kubesphere/kubesphere)
 
+![logo](docs/images/kubesphere-logo.png)
+
 ----
 
 ## What is KubeSphere
@@ -12,7 +14,7 @@
 
 ## Features
 
-KubeSphere Advanced Edition 2.0.0 provides an easy-to-use console with the awesome user experience that allows you to quickly get started with a container management platform. KubeSphere provides and supports following core features:
+KubeSphere Advanced Edition 2.0.1 provides an easy-to-use console with the awesome user experience that allows you to quickly get started with a container management platform. KubeSphere provides and supports following core features:
 
 
 - Workload management
@@ -37,59 +39,70 @@ It also supports multiple open source storage and high-performance cloud storage
 
 ## Latest Release
 
-KubeSphere Advanced Edition 2.0.0 was released on **May 18th, 2019**. See the [Release Notes For 2.0.0](https://docs.kubesphere.io/advanced-v2.0/release/release-v200/) to preview the updates.
+KubeSphere Advanced Edition 2.0.1 was released on **May 18th, 2019**. See the [Release Notes For 2.0.1](https://docs.kubesphere.io/advanced-v2.0/release/release-v201/) to preview the updates.
 
 ## Installation
 
-KubeSphere installation supports following 2 kinds of installation, please reference the following guides on how to get KubeSphere up and running.
+### Minimum Requirements
 
-### All-in-One
+- Operating Systems
+   - CentOS 7.5 (64 bit)
+   - Ubuntu 16.04/18.04 LTS (64 bit)
+   - Red Hat Enterprise Linux Server 7.4 (64 bit)
+   - Debian Stretch 9.5 (64 bit)
+- Hardware
+   - CPU：8 Core,  Memory：16 G, Disk Space：100 G
 
-[All-in-One](https://docs.kubesphere.io/advanced-v2.0/zh-CN/installation/all-in-one/): For those who are new to KubeSphere and looking for the fastest way to install and experience the dashboard. 
+### All-in-One
 
-Just download the installer and execute the `install.sh` under `/scripts` folder, choose `"1) All-in-one"` to trigger the installation. Generally, you can install it directly without any modification, for details please reference [All-in-One](https://docs.kubesphere.io/advanced-v2.0/zh-CN/installation/all-in-one/).
+[All-in-One](https://docs.kubesphere.io/advanced-v2.0/zh-CN/installation/all-in-one/): For those who are new to KubeSphere and looking for the fastest way to install and experience the dashboard. Execute following commands to download and install KubeSphere in a single node.
 
 ```bash
-$ curl -L https://kubesphere.io/download/stable/advanced-2.0.0 > advanced-2.0.0.tar.gz
-$ tar -zxf advanced-2.0.0.tar.gz
+$ curl -L https://kubesphere.io/download/stable/advanced-2.0.1 > advanced-2.0.1.tar.gz && tar -zxf advanced-2.0.1.tar.gz
+$ cd kubesphere-all-advanced-2.0.1/scripts
+$ ./install.sh
 ```
 
+![demo](https://pek3b.qingstor.com/kubesphere-docs/png/kubesphere-intall.gif)
+
+Choose `"1) All-in-one"` to trigger the installation. Generally, you can install it directly without any configuration. For details please reference [All-in-One](https://docs.kubesphere.io/advanced-v2.0/zh-CN/installation/all-in-one/).
+
 ### Multi-Node
 
-[Multi-Node](https://docs.kubesphere.io/advanced-v2.0/zh-CN/installation/multi-node/) is used for installing KubeSphere on multiple instances, supports for installing a highly available cluster which is able to use in a formal environment.
+[Multi-Node](https://docs.kubesphere.io/advanced-v2.0/zh-CN/installation/multi-node/) is used for installing KubeSphere on multiple instances, supports for installing a highly available cluster in a formal environment. Multi-node installation requires pre-configuration steps, see [Multi-Node Guide](https://docs.kubesphere.io/advanced-v2.0/zh-CN/installation/multi-node/).
 
 
-### Minimum Requirements
+## To start using KubeSphere
 
-- Operating Systems
-   - CentOS 7.5 (64 bit)
-   - Ubuntu 16.04/18.04 LTS (64 bit)
-   - Red Hat Enterprise Linux Server 7.4 (64 bit)
-   - Debian Stretch 9.5 (64 bit)
-- Hardware
-   - CPU：8 Core,  Memory：16 G, Disk Space：100 G
+### Quick Start
+
+The [Quick Start Guide](https://docs.kubesphere.io/advanced-v2.0/quick-start/admin-quick-start/) provides 12 quick-start tutorials to walk you through the process and common manipulation in KubeSphere, with a quick overview of the core features of KubeSphere that helps you to get familiar with it.
 
-## Quick Start
 
-The [Quick Start Guide](https://docs.kubesphere.io/advanced-v2.0/quick-start/admin-quick-start/) provides 12 quick-start examples to walk you through the process and common manipulation in KubeSphere, with a quick overview of the core features of KubeSphere that helps you to get familiar with it.
+![Dashboard](docs/images/dashboard.png)
 
+### Documentation
+
+- [KubeSphere Documentation (En/中) ](https://docs.kubesphere.io/)
+- [KubeSphere Documentation (PDF)](https://docs.kubesphere.io/KubeSphere-advanced-v2.0.pdf)
+
+
+## To start developing KubeSphere
+
+The [development guide](docs/development-guide.md) hosts all information about building KubeSphere from source, git workflow, how to contribute code and how to test.
 
 ## RoadMap
 
-Currently, KubeSphere has released the following 4 major editions. Advanced Edition 2.0.0 was released on May 18, 2019. The future releases will include Big data, AI, Multicluster, QingCloud SDN, etc.
+Currently, KubeSphere has released the following 4 major editions. The future releases will include Big data, AI, Multicluster, QingCloud SDN, etc.
 
-**Community Edition** => **Express Edition** => **Advanced Edition 1.0.0** => **Advanced Edition 2.0.0**
+**Community Edition** => **Express Edition** => **Advanced Edition 1.0.0** => **Advanced Edition 2.0.x**
 
 ![Roadmap](docs/images/roadmap-en.png)
 
-## Documentation
-
-- [KubeSphere Documentation (En/中) ](https://docs.kubesphere.io/)
-- [KubeSphere Docementation (PDF)](https://docs.kubesphere.io/KubeSphere-advanced-v2.0.pdf)
 
 ## Support, Discussion, and Community
 
-If you need any help with KubeSphere, please join us at [Slack channel](http://kubesphere.slack.com/) where most of our team hangs out at.
+If you need any help with KubeSphere, please join us at [Slack channel](http://kubesphere.slack.com/).
 
 Please submit any KubeSphere bugs, issues, and feature requests to [KubeSphere GitHub Issue](https://github.com/kubesphere/kubesphere/issues).
 
@@ -99,6 +112,5 @@ All members of the KubeSphere community must abide by [Code of Conduct](docs/cod
 
 How to submit a pull request to KubeSphere? See [Pull Request Instruction](docs/pull-requests.md).
 
-You can then find out more detail [here](docs/welcome-to-KubeSphere-new-developer-guide.md).
 
 

docs/development-guide.md

+# Development Guide
+
+This document walks you through how to get started developing KubeSphere and development workflow.
+
+## Preparing the environment
+
+### Go
+
+KubeSphere development is based on [Kubernetes](https://github.com/kubernetes/kubernetes), both of them are written in [Go](http://golang.org/). If you don't have a Go development environment, please [set one up](http://golang.org/doc/code.html).
+
+| Kubernetes     | requires Go |
+|----------------|-------------|
+| 1.13+          | >= 1.12     |
+
+> Tips: 
+> - Ensure your GOPATH and PATH have been configured in accordance with the Go
+environment instructions. 
+> - It's recommended to install [macOS GNU tools](https://www.topbug.net/blog/2013/04/14/install-and-use-gnu-command-line-tools-in-mac-os-x) for Mac OS.
+
+
+### Dependency management
+
+KubeSphere uses `dep` to manage dependencies in the `vendor/` tree, execute following command to install [dep](https://github.com/golang/dep).
+
+```go
+go get -u github.com/golang/dep/cmd/dep
+```
+
+### Test
+
+In the development process, it is recommended to use local Kubernetes clusters, such as [minikube](https://kubernetes.io/docs/tasks/tools/install-minikube/), or to install an single-node [all-in-one](https://github.com/kubesphere/kubesphere#all-in-one) environment (Kubernetes-based) for quick testing.
+
+> Tip: It also supports to use Docker for Desktop ships with Kubernetes as the test environment.
+
+## Development Workflow
+
+![ks-workflow](images/ks-workflow.png)
+
+### 1 Fork in the cloud
+
+1. Visit https://github.com/kubesphere/kubesphere
+2. Click `Fork` button to establish a cloud-based fork.
+
+### 2 Clone fork to local storage
+
+Per Go's [workspace instructions][https://golang.org/doc/code.html#Workspaces], place KubeSphere' code on your `GOPATH` using the following cloning procedure.
+
+1. Define a local working directory:
+
+```bash
+$ export working_dir=$GOPATH/src/kubesphere.io
+$ export user={your github profile name}
+```
+
+2. Create your clone locally:
+
+```bash
+$ mkdir -p $working_dir
+$ cd $working_dir
+$ git clone https://github.com/$user/kubesphere.git
+$ cd $working_dir/kubesphere
+$ git remote add upstream https://github.com/kubesphere/kubesphere.git
+
+# Never push to upstream master
+$ git remote set-url --push upstream no_push
+
+# Confirm that your remotes make sense:
+$ git remote -v
+```
+
+### 3 Keep your branch in sync
+
+```bash
+git fetch upstream
+git checkout master
+git rebase upstream/master
+```
+
+### 4 Add new features or fix issues
+
+Branch from it:
+
+```bash
+$ git checkout -b myfeature
+```
+
+Then edit code on the myfeature branch.
+
+**Test and Build**
+
+Currently, make rules only contain simple checks such as vet, unit test, will add e2e tests soon.
+
+**Using KubeBuilder**
+
+- For Linux OS, you can download and execute this [KubeBuilder script](https://raw.githubusercontent.com/kubesphere/kubesphere/master/hack/install_kubebuilder.sh).
+
+- For MacOS, you can install KubeBuilder by following this [guide](https://book.kubebuilder.io/quick-start.html).
+
+**Run and Test**
+
+```bash
+$ make all
+# Run every unit test
+$ make test
+```
+
+Run `make help` for additional information on these make targets.
+
+### 5 Development in new branch
+
+```bash
+$ git add <file>
+$ git commit -s -m "add your description"
+```
+
+### 6 Push to your folk
+
+When ready to review (or just to establish an offsite backup or your work), push your branch to your fork on github.com:
+
+```
+$ git push -f ${your_remote_name} myfeature
+```
+
+### 7 Create a PR
+
+- Visit your fork at https://github.com/$user/kubesphere
+- Click the` Compare & Pull Request` button next to your myfeature branch.
+- Check out the [pull request process](pull-request.md) for more details and advice.
+
+