fix 'control reaches end of non-void function'
there's no need to get the other attributes when we have a custom share builder
setting multiple media objects is not supported and breaks the share builder. prevent it.
handle image file path URLs properly
bump version
fix activity showing up as share activity on iOS 7
upgrade Google+ iOS SDK to fix build errors
bump Google+ iOS SDK version
Merge branch 'master' of github.com:lysannschlegel/GooglePlusShareActivity

Conflicts:
	README.md