Will Ayers cointilt

## gist:4354271
// Check existence
function exists(thing) {
  return (typeof thing !== 'undefined' && thing !== null) ? thing : undefined;
}

/*
  Usage...

  var options = {
    latitude: 0,
	// Check existence
	function exists(thing) {
	return (typeof thing !== 'undefined' && thing !== null) ? thing : undefined;
	}

	/*
	Usage...

	var options = {
	latitude: 0,