Update CHANGELOG with changes for 0.6.0 so far.
Update CHANGELOG with changes for 0.6.0 so far.

mglidden/CocoaPods,Ashton-W/CocoaPods,vivekshukla-mob-ibtech/Repository,mglidden/CocoaPods,ashfurrow/CocoaPods,orta/CocoaPods,segiddins/CocoaPods,mglidden/CocoaPods,0xced/CocoaPods