docs(scaffold): add link option for local

SCAFFOLDING.md

@@ -28,10 +28,18 @@ webpack-cli init <your-scaffold>
 #### Running a scaffold locally
 When the scaffold package is on you local file system you should pass its path to `init`:
 
-```js
+```bash
 webpack-cli init path/to/your/scaffold
 ```
 
+Or you can create a global module and symlink to the local one:
+
+```bash
+cd path/to/my-scaffold
+npm link
+webpack-cli init my-scaffold
+```
+
 #### Running a scaffold from npm
 
 If the package is on npm, its name must begin with `webpack-scaffold` and can be used running: