Reports about the build needed for the demo work (#807)

* Reports on the build needed for the demo work

* Information moved to the top

Author: vinicius73

docs/en/essentials/getting-started.md

@@ -4,6 +4,8 @@
 
 Creating a Single-page Application with Vue.js + vue-router is dead simple. With Vue.js, we are already composing our application with components. When adding vue-router to the mix, all we need to do is map our components to the routes and let vue-router know where to render them. Here's a basic example:
 
+> All examples will be using the standalone version of vue to make template parsing possible. See more details [here](http://vuejs.org/guide/installation.html#Standalone-vs-Runtime-only-Build)
+
 ### HTML
 
 ``` html