fix indent
Using --path option to enhance the independence of multiple projects
Merge pull request #55 from kenchan/use_bundler_path_option

Use bundler path option
Test against ruby 2.1.0-preview2
Merge pull request #56 from sanemat/feature/ruby-2-1-preview2

Test against ruby 2.1.0-preview2
Add changelog
Bump version to 4.0.1
Bump development version to 4.0.2.beta