Add wagtail terms to Rich text editor section (#219)

Author: smark-1

README.md

@@ -75,6 +75,7 @@ Awesome Wagtail [![Awesome](https://cdn.rawgit.com/sindresorhus/awesome/d7305f38
 - [WagtailDraftail](https://github.com/springload/wagtaildraftail) – Draft.js editor for Wagtail, built upon [Draftail](https://github.com/springload/draftail) and [draftjs_exporter](https://github.com/springload/draftjs_exporter).
 - [wagtail-readinglevel](https://github.com/vixdigital/wagtail-readinglevel) – Wagtail plugin to determine the reading level of text input into a rich text field.
 - [Wagtail EditorJS](https://github.com/Nigel2392/wagtail_editorjs) - An [EditorJS](https://editorjs.io/) widget with great support for Wagtail's page, image and document choosers.
+- [Wagtail Terms](https://github.com/smark-1/wagtailterms) - A plugin to add a glossary terms entity to the Draftail editor.
 
 ### Widgets