updated README

README.md

@@ -6,7 +6,26 @@ SentinelJS is a tiny JS library that lets you detect new DOM nodes using CSS sel
 
 ## Introduction
 
-SentinelJS is a tiny JS library that makes it easier to set up watch functions that will notify you anytime a new DOM node is added that satisfies a CSS selector rule.
+SentinelJS is a tiny JS library that makes it easy to set up watch functions that will notify you anytime a new DOM node is added that satisfies a CSS selector rule. SentinelJS is useful for writing plugins that make modifications when a new DOM node is inserted. This can be useful for creating Shadow DOM-like experience where you can define interactive components using purely HTML.
+
+The latest version of SentinelJS can be found in the `dist/` directory in this repository:
+ * [sentinel.js](https://raw.githubusercontent.com/muicss/sentineljs/master/dist/sentinel.js)
+ * [sentinel.min.js](https://raw.githubusercontent.com/muicss/sentineljs/master/dist/sentinel.min.js)
+
+You can also use it as a CJS or AMD module:
+
+```bash
+$ npm install --save sentinel-js
+```
+
+```javascript
+var sentinel = require('sentinel-js');
+
+sentinel.on('my-awesome-component', function(el) {
+  // add more functionality to the element
+  el.innerHTML = 'The sentinel is always watching.';
+});
+```
 
 ## Quickstart
 
@@ -52,10 +71,22 @@ SentinelJS is a tiny JS library that makes it easier to set up watch functions t
 
 #### on(cssSelectors, callbackFn)
 
+Use the `on()` method to set up a watch for new DOM nodes.
+
+ * `cssSelectors` - A single selector string or an array
+ * `callbackFn` - The callback function
+
 #### off(cssSelectors[, callbackFn])
 
+Use the `off()` method to remove a watch. If `callbackFn` is emtpy, all watches for the given cssSelector will be removed.
+
+ * `cssSelectors` - A single selector string or an array
+ * `callbackFn` - The callback function you want to remove the watch for (optional)
+
 #### reset()
 
+The `reset()` method will remove all watches and callbacks from the sentinel library.
+
 ### Async Loading
 
 To make it easy to use SentinelJS asynchronously, the library dispatches a `sentinel-load` event that will notify you when the library is ready to be used: