How to Install Atom Text Editor on Ubuntu 16.04 / Linux Mint 18 / CentOS 7 / RHEL 7

Atom is a free and open source text editor for Windows, MacOS and Linux like operating system. It is based on Electron (CoffeeScript /Javascript/HTML)) and can also be be used as IDE (integrated development environment). Atom is developed and maintained by GitHub Inc. and is also known as “hackable text editor for the 21st Century”.