'version: latest' for example longevity
'version: latest' for example longevity

Reviewed in https://codereview.appspot.com/7793044/

opozo/web-endpoints,pnedunuri/appengine-endpoints-tictactoe-python,chenbi/GoogleAppEngine,pnedunuri/appengine-endpoints-tictactoe-python,chenbi/GoogleAppEngine,opozo/web-endpoints,opozo/web-endpoints,opozo/web-endpoints,GoogleCloudPlatform/appengine-endpoints-tictactoe-python,GoogleCloudPlatform/appengine-endpoints-tictactoe-python,opozo/web-endpoints,opozo/web-endpoints,pnedunuri/appengine-endpoints-tictactoe-python