chnage package name once again
update README and bump version number
Merge branch 'release/0.1.6'

* release/0.1.6:
  update README and bump version number
  chnage package name once again
  restore ``Feedback`` model
  update README
  remove unused import
  update requirements
  add .travis.yml
  change package name
Merge tag '0.1.6' into develop

0.1.6

* tag '0.1.6':
  update README and bump version number