Docs: Add Apollo 1.5 HMI quick start guide.

docs/quickstart/apollo_1_5_quick_start.md

+# Apollo 1.5 Quick Start Guide
+
+## TODO(all): Other parts ahead
+
+## Launch the Local release env Docker Image
+
+Run the following commands:
+
+```bash
+cd $APOLLO_HOME
+bash docker/scripts/release_start.sh local
+```
+
+When Docker starts, it creates a port mapping, which maps the Docker internal port 8887 to the host port 8887. You can then visit the HMI web service in your host machine browser:
+
+Open the Chrome browser and start the Apollo HMI by going to **192.168.10.6:8887**.
+ ![](images/hmi_setup_profile.png)
+You'll be required to setup profile before doing anything else. Click the
+dropdown menu to select your HDMap and vehicle in use. The list are defined in
+[HMI config file](https://raw.githubusercontent.com/ApolloAuto/apollo/master/modules/hmi/conf/config.pb.txt).
+
+Then your HMI comes to live!
+
+*Note: It's also possible to change profile on the right panel of HMI, but just
+remember to click "Reset All" on the top-right corner to restart the system.*
+
+ ![](images/start_hmi.png)
+
+## TODO(all): Apollo 1.0 functions.
+
+## (*New!*) Auto follow
+
+In Apollo 1.5, we released the new feature, auto following the traffic until
+destination.
+
+1. To make it work, firstly you need setup the system by clicking the "Setup"
+   button on left panel.
+
+ ![](images/hmi_setup_1.5.png)
+
+1. Make sure all modules are on and hardware is ready, and the vehicle is in a
+   good state which is safe to enter auto mode to follow the traffic until
+   destination.
+
+   Click the "Start Auto" button, then it will just drive you there!
+
+ ![](images/hmi_start_auto_following.png)
+
+## TODO(all): Other parts behind