This is a set of nano configuration files for syntax highlightings.
Put all files in the .nano directory of your home dir:
$ cd ~
$ git clone https://github.com/jefflance/nano-syntax-highlighting .nano
Add the required include lines to your .nanorc file.
$ cat .nano/_loadall.nanorc >> .nanorc
If you want to disable a syntax highlighting config, just comment out the desired line.