Add doc status to project page

README.rst

@@ -17,8 +17,21 @@ Data Workspaces runs on
 Unix-like systems, including Linux, MacOS, and on Windows via the
 Windows Subsystem for Linux.
 
-.. image:: https://travis-ci.org/data-workspaces/data-workspaces-core.svg?branch=master
+|build-badge| |spacing| |docs-badge|
+
+.. |build-badge| image:: https://travis-ci.org/data-workspaces/data-workspaces-core.svg?branch=master
     :target: https://travis-ci.org/data-workspaces/data-workspaces-core
+    :width: 39%
+    :alt: Build Status
+
+.. |spacing| raw:: html
+
+      
+
+.. |docs-badge| image:: https://readthedocs.org/projects/data-workspaces-core/badge/?version=latest
+    :target: https://data-workspaces-core.readthedocs.io/en/latest/?badge=latest
+    :width: 39%
+    :alt: Documentation Status
 
 Quick Start
 ===========