updates podspec
updates podspec

Tramino/GKImagePicker,timothyrobb/GKImagePicker,bofiaza/GKImagePicker,vasiabikeru/GKImagePicker,zen4ever/GKImagePicker,VUID/GKImagePicker,robseward/GKImagePicker,stian-a-johansen/GKImagePicker,andris-zalitis/GKImagePicker