Emit events

Example usage with `grunt-notify` (in Gruntfile.coffee):

	grunt.event.on 'coffeelint:any', (status, message) ->
		grunt.config ['notify', 'coffeelint'], options:
			title: "Coffeelint #{status}"
			message: message
		grunt.task.run 'notify:coffeelint'



Resolves #14
Merge pull request #16 from es128/patch-2

Emit events