added screenshots to podspec
added screenshots to podspec

lukaszmargielewski/THPinViewController,FiftyTwoDegreesNorth/THPinViewController,wealthsimple/THPinViewController,WrightsCS/THPinViewController,Feverup/THPinViewController,WrightsCS/THPinViewController,lukaszmargielewski/THPinViewController,wealthsimple/THPinViewController,antiraum/THPinViewController,Feverup/THPinViewController,FiftyTwoDegreesNorth/THPinViewController