Added issuestats to readme file

Author: Byron

README.rst

@@ -49,6 +49,12 @@ DEVELOPMENT
 .. image:: https://coveralls.io/repos/gitpython-developers/gitdb/badge.png
     :target: https://coveralls.io/r/gitpython-developers/gitdb
 
+.. image:: http://www.issuestats.com/github/gitpython-developers/gitdb/badge/pr
+    :target: http://www.issuestats.com/github/gitpython-developers/gitdb
+
+.. image:: http://www.issuestats.com/github/gitpython-developers/gitdb/badge/issue
+    :target: http://www.issuestats.com/github/gitpython-developers/gitdb
+
 The library is considered mature, and not under active development. It's primary (known) use is in git-python.
 
 INFRASTRUCTURE