Fix adding ssh keys and env vars

app/serializers/env-var.coffee

@@ -6,4 +6,7 @@ Serializer = ApplicationSerializer.extend
     repo: { key: 'repository_id' }
   }
 
+  serialize: (snapshot, options) ->
+    return { env_var: this._super(snapshot, options) }
+
 `export default Serializer`

app/serializers/ssh_key.js

@@ -0,0 +1,7 @@
+import ApplicationSerializer from 'travis/serializers/application';
+
+export default ApplicationSerializer.extend({
+  serialize(snapshot, options) {
+    return { ssh_key: this._super(...arguments) };
+  }
+});