Remove Auto-Generated TinyMCE Skins and Add `public/tinymce/skins/` to `.gitignore` by aaronskiba · Pull Request #3466 · DMPRoadmap/roadmap

These files are already being copied from `node_modules/` to `public/` whenever we run `rails s` (see `config/initializers/assets.rb`).
The `public/tinymce/skins/` directory and its contents are auto-generated whenever we run `rails s`.

@aaronskiba

johnpinto1