In order for your CocoaPod for iOS SDK to use FacebookCore, FacebookLogin and FacebookShare, you would need to add the following lines to your Podfile:
use_frameworks!
pod 'PianoComposer', '~>2.3.10'
pod 'PianoOAuth', '~>2.3.10'
Then run pod install. For details of the installation and usage of CocoaPods, visit the official website here. For complete information about the Piano SDK for iOS, please have a look at this documentation.