Add description and badges to README (#52)

Author: liyanhui1228

README.rst

@@ -1,6 +1,28 @@
 Dependency Management Toolkit for Google Cloud Python Projects
 ==============================================================
 
+    Version conflicts between dependencies has been a big issue for GCP Python
+    users. The issue typically happens when a user depends on two libraries A
+    and B, both of which depend on incompatible versions of library C. This
+    can lead to non-deterministic behavior, since only one version of C
+    actually gets loaded into the library.
+
+    This repository is providing a toolkit for GCP Python open source projects
+    to bootstrap their development infrastructure, enforcing centralized
+    dependency management, CI, and release process, thus ensuring compatibility
+    across all of our GCP Python open source libraries for our end-users.
+
+|circleci| |pypi|
+
+.. |circleci| image:: https://circleci.com/gh/GoogleCloudPlatform/cloud-opensource-python/tree/master.svg?style=svg&circle-token=edd37af38ff6d303b11cd0620890537168144137
+    :target: https://circleci.com/gh/GoogleCloudPlatform/cloud-opensource-python/tree/master
+.. |pypi| image:: https://img.shields.io/pypi/v/compatibility_lib.svg
+   :target: https://pypi.org/project/compatibility_lib/
+
+-  `Compatibility Status Dashboard`_
+
+.. _Compatibility Status Dashboard: https://googlecloudplatform.github.io/cloud-opensource-python/
+
 License
 -------