Removed $rootScope.$apply(..) function wrappers for success and failure callbacks to Places API lookups.

There shouldn't be a need by default to include `$rootScope.$apply()` calls when wrapping the **success** and **failure** callbacks for the Places API calls.  This causes problem when nesting them with a basic lookup then a detailed lookup.

Here are examples with *angular-1.2.6*

Example with `$rootScope.apply(...)` error:
http://plnkr.co/edit/cVp5rh?p=preview

Updated `angularjs-google-places.js` with no error:
http://plnkr.co/edit/nHkXmC?p=preview