### Creating Custom Skins
1. Create a folder like this (recommended name: 'src/skin-custom-...')
2. For a start, copy files from one of the existing skin folders (src/skin-...)
to the custom folder:
- ui.fancytree.less (required)
- icons.gif (if needed)
- loading.gif (if needed)
3. cd to your fancytree folder and run `grunt dev` from the console.
Note: NPM and Grunt are required.
Read [how to install the toolset](https://github.com/mar10/fancytree/wiki/HowtoContribute#install-the-source-code-and-tools-for-debugging-and-contributing).
4. Edit and save your ui.fancytree.less file.
The `ui.fancytree.css` will be generated and updated automatically from
the LESS file.