Install Composer on Ubuntu 16.04

Quick install Composer library manager on Ubuntu 16.04 to handle Drupal 8 libraries.

First, get Composer:

$cd ~
$sudo apt-get install curl
$sudo curl -s https://getcomposer.org/installer | php

make Composer available globally:

$sudo mv composer.phar /usr/local/bin/composer

and you are done! You should get a similar output as in the next screenshot: