Add readme badges

README.rst

@@ -2,6 +2,11 @@
 Commonware
 ==========
 
+.. image:: https://img.shields.io/travis/mozilla/commonware/master.svg
+    :target: https://travis-ci.org/mozilla/commonware
+.. image:: https://img.shields.io/pypi/v/commonware.svg
+    :target: https://pypi.python.org/pypi/commonware
+
 Commonware is a collection of small but useful tools for Django.
 
 They seemed too small to be worth their own packages, but we also wanted