Cut 0.15.0 release.

Author: dhermes

setup.py

@@ -25,7 +25,7 @@
 
 setup(
     name='gcloud',
-    version='0.14.0',
+    version='0.15.0',
     description='API Client library for Google Cloud',
     author='Google Cloud Platform',
     author_email='jjg+gcloud-python@google.com',