log to a notification service

[pfraces]

• Allow to pass custom loggers through configuration
• This must be accessible from grunt-freddie too

var notify = require('../node_modules/grunt-notify/lib/notify-lib'),
    title = 'freddie has taken the stage!';

var logger = function (msg) {
  // notify({ title: staticPath, message: 'MOCK listening at ' + server.address().port });
  notify({ title: title, message: msg });
});