CB-6491 add CONTRIBUTING.md
CB-6576 - Returns a specific error message when app has no access to library.

Signed-off-by: Shazron Abdullah <shazron@apache.org>
CB-6613 Use WinJS functionality to get base64-encoded content of image instead of File plugin functionality
CB-6612 camera.getPicture now always returns encoded JPEG image
Removed invalid note from CB-5398
Merge branch 'CB-6612' of https://github.com/MSOpenTech/cordova-plugin-camera
Merge branch 'CB-6613' of https://github.com/MSOpenTech/cordova-plugin-camera
Little fix in code formatting

github: close #28