adding auto redirect to repo when hitting crates /repo url

Author: Jake Goldsborough

app/router.js

@@ -22,6 +22,7 @@ Router.map(function() {
 
         // Well-known routes
         this.route('docs');
+        this.route('repo');
     });
     this.route('me', function() {
         this.route('crates');

app/routes/crate/repo.js

@@ -0,0 +1,18 @@
+import Ember from 'ember';
+
+export default Ember.Route.extend({
+    redirect() {
+        var crate = this.modelFor('crate');
+
+        var repository = crate.get('repository');
+        if (repository) {
+            window.location = repository;
+        } else {
+            // Redirect to the crate's main page and show a flash error if
+            // no repository is found
+            var message = 'Crate does not supply a repository URL';
+            this.controllerFor('application').set('nextFlashError', message);
+            this.replaceWith('crate', crate);
+        }
+    },
+});