Minor issues resolved

Added

• Added NSPhotoLibraryUsageDescription for iOS 10

Fixed

• Fixed slide reset issue in #23
• Fixed unsupported color space in #26

support any angle to rotate

Merge pull request #22 from itouch2/dev

modify podspec

PhotoTweaksViewControllerDelegate minor change

1.0.2

Update PhotoTweaks.podspec

1.0.1: Merge pull request #12 from giladno/master

do not pop controller automatically when delegate is set