Your first compilation

Hello world

Create a new folder, for example "test", and create a new file in it, named "hello.js" Open "hello.js" and add :
console.log("Hello NectarJS!");

Save and close "hello.js"

Compile it

In order to compile this file, open a terminal and move into the test folder.
Once done, type :
nectar hello.js

A binary file and a "project.json" file should have been created. You can execute the binary file, for example on Linux :

This should output "Hello NectarJS!"