rename id option to toolbarId avoid conflicts with Backbone.View options

demos/default/index.js

@@ -3,7 +3,7 @@ import 'bootstrap-webpack';
 
 window.toolbar = new ToolbarView({
   el: '.toolbar-container',
-  id: 'demo-toolbar',
+  toolbarId: 'demo-toolbar',
   items: [{
     type: 'button',
     classes: ['btn', 'btn-primary'],

js/toolbar-view.js

@@ -49,12 +49,12 @@ function renderItemTree(root) {
 
 export class ToolbarView extends Backbone.View {
   initialize({
-    id = _.uniqueId('toolbar-'),
+    toolbarId = _.uniqueId('toolbar-'),
     classes = [],
     items = [],
     events = {},
   }) {
-    this._root = { type: 'toolbar', id, classes, items };
+    this._root = { type: 'toolbar', id: toolbarId, classes, items };
     this._events = events;
     this._contexts = renderItemTree(this._root);
   }