Add appraisal config
Add gem appraisal

Appraisal solve multi gemfiles
https://github.com/thoughtbot/appraisal
Add gemfiles generated by appraisal
Ignore gemfiles generated by appraisal
Use generated gemfile for travis-ci
Remove gemfiles by handmaid
Merge pull request #40 from sanemat/feature/use-appraisal

Use gemfile generated by appraisal instead of handmaid gemfiles