Add dependency cordova.dialogs for debug notifications.  Bump version to 0.3.5 for re-submissions to PGB

Added brief explanation of changePace() function for iOS

Upgrade plugin for new ios 8 permission request of background geolocation.  also asked for permissions to display local-notifications when in debug mode

Oops made a mistake in locationToHash, accidentally hard-coded stationaryLocation instead of provided location param

Add an error switch in didFail handler.  Don't stop updating location for code: 0.  This allows user to lose connection briefly, driving through tunnels, entering subway, buildings

Add local-notification debug messages.  Modify locationManager didFailFailWithError handler.  Add bgTask expiration handler.  Remove unused internal locationCache which was never ever emptied