Install Node.js If you want to run the preconfigured local web-server and the test tools then you will also need Node.js v0.10.27+.
You can download a Node.js installer for your operating system from http://nodejs.org/download/.
The doubt is: why have I to use
NodeJS 0.10.27? it's a old version, given that now (as I've just seen in the NodeJS's website) the project is on the version 4./5.
If I am saying things that aren't, please correct me.
I tried to follow the steps of the tutorial with the 4.* version and I'couldnt due to the required NodeJS version of the dependencies.