Merge branch 'release/0.2.8' into develop
Add ability to send extra params for S3 sign
Add possibility to set S3 region
add s3 tag
Remove region from json to respect policy conditions
Remove region from json to respect policy conditions
Merge branch 'develop' of https://github.com/r4m/ember-uploader into develop
Fix var and add code to lib
Merge branch 'release/v0.1'