ember-ajax

Fixes #37
Fixes #38

app/services/ajax.js

@@ -0,0 +1,23 @@
+import Ember from 'ember';
+import AjaxService from 'ember-ajax/services/ajax';
+
+const { computed, inject: { service } } = Ember;
+
+export default AjaxService.extend({
+  session: service(),
+  globals: service(),
+
+  host: computed('globals.apiURL', function() {
+    return `${this.get('globals.apiURL')}/api/${this.get('globals.genus')}`;
+  }),
+
+  headers: computed('session.authToken', {
+    get: function() {
+      let headers = {};
+      this.get('session').authorize('authorizer:application', (headerName, headerValue) => {
+        headers[headerName] = headerValue;
+      });
+      return headers;
+    }
+  })
+});