Removed shared classes from WPiOS and added pod for new shared project
Updated pods to recent version and remote WordPress-iOS-Shared
Merge branch 'develop' into feature/shared-ios-lib

Conflicts:
	WordPress/WordPress.xcodeproj/project.pbxproj
Merge pull request #1768 from wordpress-mobile/feature/shared-ios-lib

Extract shared classes into a pod for use in other components