var Emity = require('emity'); // For node

var emity   = new Emity();
var context = {};

## On
emity.on('something', function () {
  // do something
}, context);


## Emit
emity.emit('something'); // performs do something

emity.off('something');

emity.emit('something'); // nothing happens

## Off
emity.off('*'); // remove all events
emity.off(); // remove all events

## Once
emity.once('happens_once', function () {
  // do something
});

emity.emit('happens_once'); // will perform something
emity.emit('happens_once'); // nothing happens