Surge Extra Content Repo

This is a repo for extra content which we want in the installers but we don't necessarily want in the code repo. We will move some of the patches and stuff here too.

Please use the following approach to files

+\
 |- skins
    |- foo.surge-skin
    |- bar.surge-skin
 |- wavetables
    |- author
       |- cat1
       |- cat2

and so on