Allow to use multiple files or groups (uploadcare#74)

bump version to 1.2.0

bump version to 1.2.0-alpha3

tagging 1.2.0-alpha2 release

add link to ruby versions to travis [skip-ci]

fix v1.1.1 release date in the changelog

Merge pull request uploadcare#40 from uploadcare/is-rails-5-ok

Is rails 5 ok?

Merge pull request uploadcare#30 from maksimgm/master

change grammatical mistake

widget updated and rails dependency changed from 4.0 to any 4.x version

refactoring and dublication removed