I've just started using https://atom.io/ on OSX
If I open a C# file it doesn't syntax highlight.
I've found https://github.com/atom/language-csharp
Do I just clone that and copy it into /Applications/Atom.app/Contents/Resources/app/node_modules ?
Go into preferences -> Packages and type 'CSharp'
I've used Lisp in the picture as I already installed CSharp so it won't show up any more.