add some badges

Author: bear

README.rst

@@ -8,6 +8,14 @@ By the `Python-Twitter Developers <[email protected]>`_
     :target: https://pypi.python.org/pypi/python-twitter/
     :alt: Wheel Status
 
+.. image:: https://travis-ci.org/bear/python-twitter.svg?branch=master
+    :target: https://travis-ci.org/bear/python-twitter
+    :alt: Travis CI
+
+.. image:: http://codecov.io/github/bear/python-twitter/coverage.svg?branch=master
+    :target: http://codecov.io/github/bear/python-twitter
+    :alt: Codecov
+
 ============
 Introduction
 ============