timer-promise

Promise version of setTimeout and clearTimeout

You can start and stop timer like this.
``js
var timer = require('timer-promise');

timer.start('foo', 5000).
then(function() {
}, function(cancelled) {
});
...
timer.stop('foo');
`
instead of
`js
var timeoutId = setTimeout(function() {
}, 5000);
...
clearTimeout(timeoutId);
``