Added AWS files to

- upgrade database
- use credstash for secret overrides

db.py

@@ -0,0 +1,15 @@
+from flask.ext.script import Manager, Server
+from flask_migrate import Migrate, MigrateCommand
+from app import create_app, db
+from credstash import getAllSecrets
+
+secrets = getAllSecrets(region="eu-west-1")
+
+application = create_app('live', secrets)
+
+manager = Manager(application)
+migrate = Migrate(application, db)
+manager.add_command('db', MigrateCommand)
+
+if __name__ == '__main__':
+    manager.run()