Move appraisal gem to gemspec
Use appraisal commands compatible with version 1.0
Add ruby 2.1.1 to travis.yml
Bump Rails versions to actual values in Appraisals file
Add Rails 4.1 to Appraisals file
Change conditions for Rails gem
Change minitest conditions for compatibility with Rails 4.1
Use minitest 4.7.5 for Rails 3.1/3.2