README: add bragging badges

README.rst

@@ -1,6 +1,12 @@
 Accessing Video Files as Python Sequences
 =========================================
 
+.. image:: https://travis-ci.org/rjw57/videosequence.svg?branch=master
+    :target: https://travis-ci.org/rjw57/videosequence
+
+.. image:: https://coveralls.io/repos/github/rjw57/videosequence/badge.svg?branch=master
+    :target: https://coveralls.io/github/rjw57/videosequence?branch=master
+
 Quite often I find myself writing scripts which need to load a few frames from a
 video file, process them and save the result to disk. It's a pain to implement
 video opening, seeking and decoding over and over again and complex Python