Merge pull request #5 from workmanw/gj/readme

readme

README.md

@@ -3,3 +3,28 @@
 This addon is a WIP rethink of [ember-diff-attrs](https://github.com/workmanw/ember-diff-attrs) which offered a decorator style approach to this problem.
 
 With `ember-did-change-attrs` we're going to solve the same problem using mixins instead of decorators. The hope is to offer a cleaner and more clear syntax without sacrificing functionality.
+
+
+## Installation
+
+`ember install ember-did-change-attrs`
+
+## Usage
+
+```js
+import DidChangeAttrs from 'ember-did-change-attrs';
+
+export default Ember.Component.extend(DidChangeAttrs, {
+  didChangeAttrsConfig: {
+    attrs: ['email', 'isAdmin']
+  },
+
+  didChangeAttrs(changes) {
+    if(changes.email) {
+      let oldEmail = changes.email.previous,
+          newEmail = changes.email.current;
+      // Do stuff
+    }
+  }
+});
+```