fix minitest warning, rubocop autofix
minitest
travis-ci
fix style
done
style fix
Rakefile
fix error in rake file
remove gem dependencies
only test on 2.1.1
rake
minitest is not in ruby core or std lib
add rake to Gemfile
rvm 2.0.0
Gemfile.lock太坑人了
delete gemfile.lock
only test on 2.0.0
merge with ruby2.1 branch