change package name
add .travis.yml
update requirements
remove unused import
update README
restore ``Feedback`` model
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