Add Wagtail Live Preview package (#117)

README.md

@@ -172,6 +172,7 @@ Awesome Wagtail [![Awesome](https://cdn.rawgit.com/sindresorhus/awesome/d7305f38
 - [Wagtail Cache](https://github.com/coderedcorp/wagtail-cache) - A simple page cache for Wagtail using the Django cache middleware.
 - [Wagtail GraphQL](https://github.com/tr11/wagtail-graphql) - App to automatically add GraphQL support to a Wagtail website.
 - [Wagtail Orderable](https://github.com/elton2048/wagtail-orderable) - Mixin support for drag-and-drop ordering in admin panel.
+- [Wagtail Live Preview](https://github.com/KalobTaulien/wagtail-livepreview) - Live page previews beside your content.
 
 ## Tools