Add travis badge
diff --git a/README.rst b/README.rst
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--- a/README.rst
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 Parameterized testing with any Python test framework
 ====================================================
 
+.. image:: https://travis-ci.org/wolever/nose-parameterized.svg?branch=master
+    :target: https://travis-ci.org/wolever/nose-parameterized
+
 Parameterized testing in Python sucks.
 
 ``nose-parameterized`` fixes that. For everything. Parameterized testing for