Get full error description
Get full error description

Summary: Get more info from `localizedDescription`.

Reviewed By: phyllipecesar

Differential Revision: D4161322

fbshipit-source-id: abffc16c9ad96d43351e6fc991941b709b7c2be0

StevenUpForever/FBSimulatorControl,facebook/FBSimulatorControl,ichu501/FBSimulatorControl,StevenUpForever/FBSimulatorControl,facebook/FBSimulatorControl,plu/FBSimulatorControl,plu/FBSimulatorControl,StevenUpForever/FBSimulatorControl,plu/FBSimulatorControl,facebook/FBSimulatorControl,StevenUpForever/FBSimulatorControl,facebook/FBSimulatorControl,facebook/FBSimulatorControl,plu/FBSimulatorControl