dtang-pubsub v2.0.0

#PS.js

##Browser Usage Minified and unminified versions in the dist folder.

	<script src="pubsub.min.js"></script>
	<script>
		var ps = new PS();
	</script>

##Node.js Usage

	npm install dtang-pubsub

Link to NPM page: https://npmjs.org/package/dtang-pubsub

	var Evt = require('pubsub');
	var ps = new Evt.PS();

##Public Methods

####publish(topic, data)

• topic (string) - your custom event name
• data (mixed) optional argument for any data that you would like to be passed with a publication and used in subscriptions.

####subscribe(topic, callback, context)

• topic (string) - your custom event name
• callback (function) - function invoked when topic is published
• context (object) - optional argument for what this will refer to within the callback function. By default, this will point to the current PS instance
• returns a subscription ID to potentially be used in unsubscribing

####unsubscribe(subscriptionID)

• subscriptionID (int) - returned from the subscribe method

##Examples

	var ps = new PS();

	var s1 = ps.subscribe('test-topic', function(data) {
		console.log(this, data);
	});

	// 3rd argument will be the context used for the 2nd argument
	var s2 = ps.subscribe('test-topic', function(data) {
		console.log(this, data);
	}, {
		name: 'David',
		age: 27
	});

	ps.publish('test-topic', 'some data');

	ps.unsubscribe(s1); // unsubscribes s1
	console.log(ps);