code: function prepareBrowserify(app, options) {
  	if(!_.has(options, 'mainFile') || !_.has(options, 'url')) {
  		throw new Error('Missing "mainFile" and "url" property.');
  	}
  
  	var mainFile = options.mainFile
  		, url = options.url
  		, exclude = options.exclude || []
  		, browserifyOptions;
  
  	exclude = exclude.concat(getServerOnlyFiles());
  	browserifyOptions = { ignore: exclude };
  	_.extend(browserifyOptions, _.omit(options, ['mainFile', 'exclude']));
  
  	_.defaults(browserifyOptions, {
  		debug: false
  		, gzip: true
  		, minify: true
  	});
  
  	app.get(url, browserify(mainFile, browserifyOptions));
  }
docs: PrivateFunction: prepareBrowserify
  Adds the Browserify middleware the the given express.js app.
  
  Parameters:
  (Object) app - Express.JS app
  (Object) options - Set of options