update travis

update travis to 27.0.3

- Update to sdk v27

- Update to gradle v3

Propagate all extra data set on start crop activity intent back in cr…

…op result intent ArthurHub#352

fix ver doc and minor refactor

Fix reading CropImageOptions in CropImageView after Samsung bundle fix

update readme and version

update readme and version

update version and readme

revert change made for testing