Atom 1.3.0 Text Editor is a hackable text editor for the 21st century, built on atom-shell. Like other desktop apps, Atom Text has its own icon in the dock, native menus and dialogs, and full access tothe file system. It is used also as a n IDE (Integrated Development Environment). Atom is built with the same open source technologies used by modern web browsers.
Source Atom Homepage.
To install Atom just run the following commands via your systems Terminal.
sudo add-apt-repository ppa:webupd8team/atom
sudo apt-get update
sudo apt-get install atom
That's it EnJoY!