touchbar package
Add touchbar elements to atom
Installation
apm install touchbar
How to use
Touchbar will be loaded on startup.
Press ctrl-alt-o to toggle touchbar
Current shipped features:
- Labels
 - Buttons
 - Insert Text Buttons
 - Color picker
 - Emoji Picker
 - Edit Touchbar
 - Set Icons
- You can either use the names provided here: http://hetima.github.io/fucking_nsimage_syntax/ (without @ and ") or use your own icons and provide an absolute path
 
 - Insert Text (e.g. 
{or[). Please useButton Text Insertand insert your desired text in the command input 

How to change elements
There is now a basic editing function build in. Press the Edit Touchbar button on your Touchbar or go to Packages -> touchbar -> Edit Touchbar. You can choose the type of your element as well as the label, command and color.
Thanks to @fand you can also add / remove and sort items in the edit view!

More advanced way:
Go to Settings -> Packages -> touchbar and update the Elements input. This input must be a valid json array of elements.
Example:
[{"name":"color-picker","type":"color-picker"},{"name":"comment-button","type":"button","label":"//","command":"editor:toggle-line-comments","color":"#316ed4","icon":"","iconColor":"default"},{"name":"spacer","type":"button","size":"small","label":"","command":"tree-view:toggle","color":"#00716c","icon":"NSTouchBarSidebarTemplate","iconColor":"white"},{"name":"toggle-command-palette","type":"button","label":"🎨","command":"command-palette:toggle","iconColor":"default"},{"name":"toggle-github","type":"button","label":"GitHub","color":"#919191","command":"github:toggle-github-tab","icon":"","iconColor":"default"},{"name":"edit-touchbar","type":"button","label":"Touchbar","command":"touchbar:edit","color":"#6c233b"},{"type":"spacer","size":"flexible","name":"Config 1547128866278"},{"type":"button-insert","name":"Config 1545387178508","label":"[ ... ]","command":"[","icon":""},{"type":"button-insert","name":"Config 1545387144391","label":"{ ... }","command":"{"},{"type":"button-insert","name":"Config 1545390215291","label":"\\","command":"\\"}]