Merge pull request #11 from jielinxu/branch-0.5.0

Update README

Former-commit-id: 55a709d5be38246908bb80683af7f6df1610b5da

README.md

-![Milvuslogo](https://milvus.io/docs/assets/milvus_logo.png)
+![Milvuslogo](https://github.com/milvus-io/docs/blob/branch-0.5.0/assets/milvus_logo.png)
 
 ![LICENSE](https://img.shields.io/badge/license-Apache--2.0-brightgreen)
 ![Language](https://img.shields.io/badge/language-C%2B%2B-blue)
 
 - [Slack Community](https://join.slack.com/t/milvusio/shared_invite/enQtNzY1OTQ0NDI3NjMzLWNmYmM1NmNjOTQ5MGI5NDhhYmRhMGU5M2NhNzhhMDMzY2MzNDdlYjM5ODQ5MmE3ODFlYzU3YjJkNmVlNDQ2ZTk)
-- [Twitter](https://twitter.com/milvus_io)
+- [Twitter](https://twitter.com/milvusio)
 - [Blog](https://www.milvus.io/blog/)
 - [CSDN](https://zilliz.blog.csdn.net/)
 - [中文官网](https://www.milvus.io/zh-CN/)
@@ -18,8 +18,6 @@ Firstly, welcome, and thanks for your interest in [Milvus](https://milvus.io)! N
 
 Milvus is an open source vector search engine that supports similarity search of large-scale vectors. Built on optimized indexing algorithm, it is compatible with major AI/ML models.
 
-Milvus was developed by ZILLIZ, a tech startup that intends to reinvent data science, with the purpose of providing enterprises with efficient and scalable similarity search and analysis of feature vectors and unstructured data. 
-
 Milvus provides stable Python, C++ and Java APIs.
 
 Keep up-to-date with newest releases and latest updates by reading Milvus [release notes](https://milvus.io/docs/en/Releases/v0.4.0/).
@@ -37,7 +35,7 @@ Keep up-to-date with newest releases and latest updates by reading Milvus [relea
   The data is stored and computed on a distributed architecture. This lets you scale data sizes up and down without redesigning the system.
 
 ## Architecture
-![Milvus_arch](https://milvus.io/docs/assets/milvus_arch.png)
+![Milvus_arch](https://github.com/milvus-io/docs/blob/branch-0.5.0/assets/milvus_arch.png)
 
 ## Get started