Example Fetch.sublime-settings file that shows how to add the WordPress Plugin Boilerplate to the list of packages you can install with the Fetch plugin.

Fetch-sublime.settings

{
  "files":
  {
    "jquery": "http://code.jquery.com/jquery.min.js"
  },
  "packages":
  {
    "html5_boilerplate": "https://github.com/h5bp/html5-boilerplate/zipball/master",
    "wordpress_plugin_boilerplate": "https://github.com/tommcfarlin/WordPress-Plugin-Boilerplate/zipball/master"
  }
}