fixed watchfile to call lib and appmanager tests correctly
extended AppManager to also take in environment variables from the AppController, that should be set for the App Engine app to start
calling helperfunctions method to find out which environment variables to set
parsing app.yaml or appengine-web.xml files for environment variables
Merge pull request #389 from shatterednirvana/set-environment-variables-for-appengine-apps

Set environment variables for App Engine apps