Error when when there's nested directory

[blazeu]

The plugin will error out when there's a nested directory inside pages or components directory.

The solution is to pass nodir option to glob, just like this example https://github.com/FullHuman/purgecss-webpack-plugin#options

I'll probably push a PR to fix this later.

[lucleray]

Thanks for your help

A PR would be nice 😃