- Add grunt, mocha.
- Modularize functions in build.
- Tests for functions and types.
- Grunt watch for rerunning tests on file save.
- Wrap argv in main() + only run when executing as a script.
- main() now accepts parameterized object literal for simulating args.
- mui#1139 split file renaming into module / argument.
- Tests + Fixture for result output.

- Search through files via node-glob
- Use _.defaults for default options
- Custom filters are now more flexible, output relative
  to options.outputDir / --output-dir
- mui-icons no longer needs --file-suffix, _24px.svg -> .jsx
  happens in filter.
- pascalCase now capitalizes first letter of recursive directories
  and dashes.