choo: add href / history handling

examples/http/models/sent.js

@@ -0,0 +1,15 @@
+module.exports = {
+  state: {
+    messages: [
+      {
+        id: 4,
+        subject: 'Should I use Ember',
+        from: 'user@example.com',
+        to: 'tomster@emberjs.com',
+        date: new Date(),
+        body: 'Ember looks pretty good, should I use it?'
+      }
+    ]
+  },
+  reducers: { }
+}