code: function url( opts ) {
  	var str = '';
  
  	str += opts.protocol+'://';
  	if ( opts.cdn ) {
  		str += 'cdn.';
  	}
  	str += opts.hostname+'/';
  	str += opts.slug+'/';
  	str += opts.file;
  
  	// e.g., https://cdn.rawgit.com/kgryte/rawgit-url/a9633f0dd2e3720dadedb965a30c999c2b0f8992/README.md
  	return str;
  }
docs: FUNCTION: url( opts )
  Returns a RawGit URL.
  
  @param {Object} opts - function options
  @param {String} opts.protocol - HTTP protocol
  @param {String} opts.hostname - RawGit hostname
  @param {String} opts.slug - repository slug
  @param {String} opts.file - filepath
  @param {Boolean} opts.cdn - boolean indicating whether a resource should be delivered via a CDN
  @returns {String} RawGit URL