Add "extension" argument to require non-JS files without extensions
Add tests for "extension" argument
Merge pull request #56 from seanchas116/extension-opts

Add "extension" argument to require non-JS files without extensions
Add contributor
Add `--extension` option docs to README
2.1.0
Add reference to mochify-istanbul
Merge pull request #57 from ferlores/master

Add link to mochify-istanbul