cocoapods configuration AFnetworking ios : [I am about to install cocoapods and  AFNetworking I have got this error I always try everything of my PODFILE ( workspace ' path / to / AFService.xcworkspace '
source ' https://github.com/CocoaPods/Specs.git '
platform: ios, ' 8.0 '

target ' AFService ' do

pod ' AFNetworking ' ' ~ > 3.0'

end)][1]


  [1]: http://i.stack.imgur.com/s6P6f.png