message: docs(webpack-plugin): add FAQ section
diff: @@ -163,5 +163,14 @@ CSS assets are handled by webpack native AssetsModules support.
  ## Compatibilities with existing loading mechanisms
  If you're using css_loader/extract make sure to exclude `.st.css` files from the process. You cannot use loaders with Stylable `.st.css` files
  +## FAQ:
  +
  +#### In what cases should I provide a custom Optimizer?
  +- You want to have different `className` and `namespace` short prefixes when you combine two projects that are not built together
  +- You want to override the `minify` function and use a custom minifier
  +
  +#### When should I provide assetFilter?
  +- When your webpack compilation should not handle a specific asset. For example, in NextJS all assets are already processed for you and the URLs in the CSS are not touched.
  +
  ## License
  Copyright (c) 2017 Wix.com Ltd. All Rights Reserved. Use of this source code is governed by an [MIT license](./LICENSE).
  