How to install atom
[email protected] ~/Downloads $ wget https://atom.io/download/deb -O atom.deb
--2017-11-15 16:04:22--  https://atom.io/download/deb
Resolving atom.io (atom.io)... 54.225.166.38, 54.243.243.251, 23.23.247.89, ...
Connecting to atom.io (atom.io)|54.225.166.38|:443... connected.
HTTP request sent, awaiting response... 302 Found
Location: https://atom-installer.github.com/v1.22.1/atom-amd64.deb?s=1510769290&ext=.deb [following]
--2017-11-15 16:04:23--
https://atom-installer.github.com/v1.22.1/atom-amd64.deb?s=1510769290&ext=.deb
Resolving atom-installer.github.com (atom-installer.github.com)... 151.101.40.133
Connecting to atom-installer.github.com (atom-installer.github.com)|151.101.40.133|:443... connected.
HTTP request sent, awaiting response... 200 OK
Length: 82253454 (78M) [application/octet-stream]
Saving to: ‘atom.deb’

atom.deb           100%[=================================================>]  78.44M  31.6MB/s    in 2.5s

2017-11-15 16:04:25 (31.6 MB/s) - ‘atom.deb’ saved [82253454/82253454]

[email protected] ~/Downloads $ sudo dpkg -i atom.deb
Selecting previously unselected package atom.
(Reading database ... 245644 files and directories currently installed.)
Preparing to unpack atom.deb ...
Unpacking atom (1.22.1) ...
Setting up atom (1.22.1) ...
Processing triggers for gnome-menus (3.13.3-6ubuntu3.1) ...
Processing triggers for desktop-file-utils (0.22+linuxmint1) ...
Processing triggers for mime-support (3.59ubuntu1) ...

Installing xml-formatter
[email protected] ~/Downloads $ apm install xml-formatter
Installing xml-formatter to /home/russ/.atom/packages ✓

Be sure to drop atom and restart it.