docs(configuration): entry for preventing filetypes from being copied (…

…#1264)

* docs(configuration): entry for preventing filetypes from being copied #1261

* Update packages/docs/src/docs/pattern-managing-assets.md

* Update packages/docs/src/docs/pattern-managing-assets.md

Co-authored-by: Maximilian Franzke <mfr@nzke.net>
Co-authored-by: Josef Bredreck <slime.games@outlook.de>

packages/docs/src/docs/pattern-managing-assets.md

@@ -50,6 +50,15 @@ Pattern Lab has a configuration object which allows users to separate source pat
 
 Note how some sets of files even extend into the "vendor" `./node_modules/` directory. Relative paths are the default but absolute paths are supported also. You may also use these paths within the Grunt or Gulp taskfiles by referring to the `paths()` function.
 
+## Preventing specific filetypes from being copied
+
+If you'd like to prevent specific filetypes from being copied from your `source` to your `public` folder like e.g. CSS preprocessor source files (`.scss`), you could specify those within an array of your pattern lab config:
+``` json
+{
+  "transformedAssetTypes": ["scss"],
+}
+```
+
 ## Adding Assets to the Pattern Header & Footer
 
 Static assets like Javascript and CSS **are not** added automagically to your patterns. You need to add them manually to the [shared pattern header and footer](/docs/modifying-the-pattern-header-and-footer/).