Configure Atom for Jekyll

https://atom.io/packages/jekyll

• The Build Command will most likely need changing due to some weirdness with $PATH in Atom.
  • Go into the packages settings (Settings -> Packages -> Jekyll).
  • Change Build Command to /path/to/jekyll, build.
  • You can get your /path/to/jekyll by using which jekyll in your terminal.

Test on the Mac with shift-option-T
Test on a Windows machine with shift-alt-T