[chore] Bump version to 0.2.0 (#75)

Author: lukesneeringer

setup.py

@@ -25,7 +25,7 @@
 
 setup(
     name='gapic-generator',
-    version='0.1.0',
+    version='0.2.0',
     license='Apache 2.0',
     author='Luke Sneeringer',
     author_email='lukesneeringer@google.com',