Added drupalgap_init() call to default.settings.js
Added drupalgap_init() and changed the drupalgap object instantiation to use it. Changed drupalgap_load_modules() to provide backwards compatability for drupalgap.modules, it throws a warning for the developer as a reminder to upgrade.
Changed the pagebeforechange handler to check for the existance of the drupalgap object before doing stuff.
Added the services module to the src and cleaned up its documentation.