Sublime Text 3 Autocomplete JSON for Gantry classes
Download gantry.sublime-completions file and place it in \AppData\Roaming\Sublime Text 3\Packages\User folder. Thats it.
Just open or create HTML file and type a Gantry Class like: "button", press CTRL+Space Bar to see autocompletion options. All code snippets begin with "g-"