Add social_media_url to podspec
Add social_media_url to podspec

AddAloner/MRProgress,odyth/MRProgress,boherna/MRProgress,AlexanderMazaletskiy/MRProgress,hanangellove/MRProgress,zaubara/MRProgress,AlexanderMazaletskiy/MRProgress,colemancda/MRProgress,zaubara/MRProgress,zaubara/MRProgress,colemancda/MRProgress,AddAloner/MRProgress,jackywpy/MRProgress,boherna/MRProgress,yarry/MRProgress,odyth/MRProgress,mrackwitz/MRProgress,yungfan/MRProgress,yungfan/MRProgress,hanangellove/MRProgress,yarry/MRProgress,mrackwitz/MRProgress,jackywpy/MRProgress