Merge pull request #519 from raquo/master

Basic tutorial: mention jsdom prerequisite upfront

Author: sjrd

doc/tutorial/basic/0.6.x.md

@@ -15,6 +15,8 @@ To go through this tutorial, you will need to [download & install sbt](https://w
 
 You will also need to [download & install Node.js](https://nodejs.org/en/download/).
 
+To run the complete tutorial application, you will also need to install jsdom as explained [below](#supporting-the-dom).
+
 ## <a name="setup"></a> Step 1: Setup
 
 First create a new folder where your sbt project will go.

doc/tutorial/basic/index.md

@@ -13,6 +13,8 @@ To go through this tutorial, you will need to [download & install sbt](https://w
 
 You will also need to [download & install Node.js](https://nodejs.org/en/download/).
 
+To run the complete tutorial application, you will also need to install jsdom as explained [below](#supporting-the-dom).
+
 ## <a name="setup"></a> Step 1: Setup
 
 First create a new folder where your sbt project will go.