Add badge for PyPI.
diff --git a/README.rst b/README.rst
index 304de31..5d9f16f 100644
--- a/README.rst
+++ b/README.rst
@@ -6,6 +6,9 @@
 .. image:: https://travis-ci.org/c2nes/javalang.svg?branch=master
   :target: https://travis-ci.org/c2nes/javalang
 
+.. image:: https://badge.fury.io/py/javalang.svg
+    :target: https://badge.fury.io/py/javalang
+
 javalang is a pure Python library for working with Java source
 code. javalang provides a lexer and parser targeting Java 8. The
 implementation is based on the Java language spec available at