Adding Gulp plugins note

Author: xsynaptic

readme.md

@@ -81,6 +81,8 @@ Configuration is handled by a single file: `gulpconfig.js`. If you leave the dir
 * [BrowserSync](http://www.browsersync.io/) settings: if you are developing on a local web server you will want to enter the URL into `browsersync.proxy` and then change `watch.watcher` to `browsersync` to take it for a test drive. You'll know it's working when you run `gulp` and a new browser opens with a live copy of your web site. Make changes to any of the Sass files and they should be shown on the page almost immediately. Of course, BrowserSync really shines when you connect a mobile device to your development server, but for that you're on your own ;)
 * Script settings: draw your attention to `scripts.bundles` and `scripts.chunks`. This feature is essentially a poor man's [Browserify](http://browserify.org/) or [Webpack](https://webpack.github.io/). By defining different "chunks" (script files that combine to provide a particular feature) and "bundles" (chunks that combine to provide feature sets) you can generate an assortment of files that can be efficiently and intelligently loaded through your WordPress theme. This approach has its limitations, of course, particularly when dependencies are shared between scripts, but it should be of use to many WordPress theme developers.
 
+Interested in adding new Gulp plugins to your build system? A full tutorial is out of scope for this project but it really shouldn't be all that hard to figure out. In brief, install a plugin with `npm install [package] --save-dev`, require it in a suitable task file, add something to the configuration file if needed, and drop it into the pipeline somewhere. Some types of plugin are particularly easy to add, for instance anything listed on the [postcss.parts](http://postcss.parts/) web site (install, require, and add to the `processor` variable in `./gulpfile.js/tasks/styles.js`).
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 ## WORKING WITH NPM