updated readme with download links, example, etc

readme.md

@@ -4,8 +4,70 @@ Computed fields for Backbone.Models
 
 ## Downloads And Source
 
+Grab the source from the `src` folder above. Grab the most recent builds
+from the links below.
+
+### Standard Builds
+
+* Development: [backbone.marionette.js](https://raw.github.com/marionettejs/backbone.marionette/master/lib/backbone.marionette.js)
+
+* Production: [backbone.marionette.min.js](https://raw.github.com/marionettejs/backbone.marionette/master/lib/backbone.marionette.min.js)
+
+### RequireJS (AMD) Builds
+
+* Development: [backbone.marionette.js](https://raw.github.com/marionettejs/backbone.marionette/master/lib/amd/backbone.marionette.js)
+
+* Production: [backbone.marionette.min.js](https://raw.github.com/marionettejs/backbone.marionette/master/lib/amd/backbone.marionette.min.js)
+
 ## Basic Use
 
+```js
+var Model = Backbone.Model.extend({
+
+  initialize: function(){
+    // initialize all of the computed fields for this model
+    Backbone.Compute(this);
+  },
+
+  // define a computed field.
+  // tell it what field to `set` on the model
+  // tell it what fields this one depends on
+  // give it a callback function to compute the value when any dependent field changes
+  computedField: Backbone.Compute("computedField", ["f1", "f2"], function(fields){
+    fieldList = fields;
+    return fields.f1 + "-" + fields.f2
+  })
+
+});
+
+var model = new Model({
+  f1: "foo",
+  f2: "bar"
+});
+
+// get the current value
+model.get("computedField"); // => "foo-bar"
+
+// re-run the computation, `set` the current value and return it
+model.computedField(); // => "foo-bar"
+
+
+// Handle "change" events for the computed field
+model.on("change:computedField", function(){
+  // do stuff when the computed field changes
+});
+
+// `set` the fields that the computed field depends on
+model.set({
+  f1: "boo",
+  f2: "far"
+});
+
+// get the updated value
+model.get("computedField"); // => "boo-far"
+model.computedField(); // => "boo-far"
+```
+
 ## License
 
 MIT license - see LICENSE.md