iOS sdk : clean up some mess around the README file
iOS sdk : clean up some mess around the README file

ArtLapitski/facebook-ios-sdk,flovilmart/facebook-ios-sdk,ShareKit/facebook-ios-sdk,shepting/facebook-ios-sdk,taptaptap/facebook-ios-sdk,flovilmart/facebook-ios-sdk,anthonylai/facebook-ios-sdk,1234-/facebook-ios-sdk,flovilmart/facebook-ios-sdk,FiftyThree/facebook-ios-sdk,shepting/facebook-ios-sdk,beamly/facebook-ios-sdk,1234-/facebook-ios-sdk,Subsplash/facebook-ios-sdk,wooga/facebook-ios-sdk,1234-/facebook-ios-sdk,wooga/facebook-ios-sdk,Citrrus/facebook-ios-sdk,shepting/facebook-ios-sdk,beamly/facebook-ios-sdk,hibu/facebook-ios-sdk,ShareKit/facebook-ios-sdk,TimeIncOSS/facebook-ios-sdk,ArtLapitski/facebook-ios-sdk,Amnysia/facebook-ios-sdk,anthonylai/facebook-ios-sdk,anthonylai/facebook-ios-sdk,1234-/facebook-ios-sdk,shepting/facebook-ios-sdk,beamly/facebook-ios-sdk,FiftyThree/facebook-ios-sdk,taptaptap/facebook-ios-sdk,TimeIncOSS/facebook-ios-sdk,tipbit/facebook-ios-sdk,tipbit/facebook-ios-sdk,Citrrus/facebook-ios-sdk,ArtLapitski/facebook-ios-sdk,FiftyThree/facebook-ios-sdk,Amnysia/facebook-ios-sdk,flovilmart/facebook-ios-sdk,flovilmart/facebook-ios-sdk,Citrrus/facebook-ios-sdk,taptaptap/facebook-ios-sdk,wooga/facebook-ios-sdk,hibu/facebook-ios-sdk,hibu/facebook-ios-sdk,Subsplash/facebook-ios-sdk,Subsplash/facebook-ios-sdk,ShareKit/facebook-ios-sdk,1234-/facebook-ios-sdk,tipbit/facebook-ios-sdk,hibu/facebook-ios-sdk,TimeIncOSS/facebook-ios-sdk,shepting/facebook-ios-sdk,Amnysia/facebook-ios-sdk,ArtLapitski/facebook-ios-sdk,hibu/facebook-ios-sdk