- Hold the option Key
- Click the Go Menu
- Choose Library to open your Library
- Scroll down to 'Services' Directory
- Drag and drop the "Open in Atom.workflow" into Services
or
mv -iv "Open in Atom.workflow" ~/Library/Services/
- Go to a File or a Folder
- Right Click (or Ctrl-Click) for File Commands menu
- Cursor over Service
- Choose "Open in Atom"