Add installation with CocoaPods to readme file.
Add installation with CocoaPods to readme file.

yoichitgy/Swinject,Swinject/Swinject,jondwillis/Swinject,yoichitgy/Swinject,Swinject/Swinject,Swinject/Swinject,Swinject/Swinject,yoichitgy/Swinject,jondwillis/Swinject,jondwillis/Swinject,yoichitgy/Swinject,jondwillis/Swinject