Update uCrop version

Merge pull request Yalantis#815 from Yalantis/develop-non-native

Release 2.2.8

Merge pull request Yalantis#813 from Yalantis/develop

Release 2.2.8

Merge pull request Yalantis#762 from Yalantis/improve/update_sample_app

Updated dependencies, resolve unexpected error on result screen

Merge pull request Yalantis#693 from zalesskyi/fix/uCrop_non_native_r…

…esult_size

Fixed cropped image size.

Merge pull request Yalantis#694 from Yalantis/develop

Develop to master

Merge pull request Yalantis#644 from Yalantis/feature/non_native

Feature/non native

Merge pull request Yalantis#646 from Yalantis/develop

updated readme

Merge pull request Yalantis#568 from Yalantis/feature/merge_non_nativ…

…e_updates_to_master

Feature/merge non native updates to master

Merge pull request Yalantis#566 from Yalantis/develop

Develop native up version to 2.2.4