Add __version__ to each library.
Fixes issue 119.
Reviewed in http://codereview.appspot.com/5846050/.
diff --git a/setup_oauth2client.py b/setup_oauth2client.py
index 4c727cd..579fe5f 100644
--- a/setup_oauth2client.py
+++ b/setup_oauth2client.py
@@ -39,8 +39,11 @@
 
 long_desc = """The oauth2client is a client library for OAuth 2.0."""
 
+import oauth2client
+version = oauth2client.__version__
+
 setup(name="oauth2client",
-      version="1.0beta8",
+      version=version,
       description="OAuth 2.0 client library",
       long_description=long_desc,
       author="Joe Gregorio",