Prepare for major release:

* Add font specific localeToUrlKeys.
* Rename .setup->locale_to_url_keys to .setup->localeToUrlKeys
* Rename .setup->url_modifier to .setup->urlModifier
* Rename lib/aliases.js to lib/locale_to_url_keys.js
* Bump version number to 0.1.0-dev1 because of API breaking changes.
Add support for opentype fonts.

fixes #9
Bump the npm version number.