Bump version

Author: jonasschneider

setup.py

@@ -20,7 +20,7 @@ def run(self):
         DistutilsBuild.run(self)
 
 setup(name='atari-py',
-      version='0.0.14',
+      version='0.0.15',
       description='Python bindings to Atari games',
       url='https://github.com/openai/atari-py',
       author='OpenAI',