Create a more meaningful `package.json` file.
Add initial Grut sub-module.
Add a jshintignore template file.
Add Composer helper library.

Just a simple wrapper around `exec`.
Stub out Silex project type and add composer sub-generator.
Initial base Silex install.
Add method to enable services via config.
Add ability to enable Twig Service Provider.
Add support for Silex's UrlGeneratorServiceProvider.