README formatting
README formatting

Summary: Backticks and some captialization

Reviewed By: zeyadsalloum

Differential Revision: D15099619

fbshipit-source-id: 16b6053e1661baa4a331db0315c71d1c146b18e2

facebook/FBSimulatorControl,facebook/FBSimulatorControl,facebook/FBSimulatorControl,facebook/FBSimulatorControl,facebook/FBSimulatorControl