Update podspec
Fix typos: proper scope for photos management, remove redundant path delimeter
Fix coding style; Do not alter URL if query params is equal to nil
Bump podspec version up to 1.1.2
Update facebook-sdk dependency
Update README.md: update installation notes
Set correct mail body
Merge commit 'da03f3010222d5e4cd616fd5fef5e2d76c3d5345'

Conflicts:
	GPActivityViewController/Cocoa+Additions.m
	GPActivityViewController/GPActivityViewController.m
	GPActivityViewController/GPOKActivity.m
	GPActivityViewController/GPVKActivity.m
	GPActivityViewController/OdnoklassnikiMgr.m
dependencies updated;