Add ls.joyous (#63)

README.md

@@ -152,6 +152,7 @@ Awesome Wagtail [![Awesome](https://cdn.rawgit.com/sindresorhus/awesome/d7305f38
 - [Wagtail Postgres Search Backend](https://github.com/leukeleu/wagtail-pg-search-backend) - PostgreSQL full text search backend for Wagtail CMS.
 - [Wagtail Gridder](https://github.com/wharton/wagtailgridder) - Grid card layout similar to Google image search results, with an expanded area for card details.
 - [Wagtail Condensed Inline Panel](https://github.com/wagtail/wagtail-condensedinlinepanel) - Drop-in replacement for Wagtail's InlinePanel suited for large number of inlines (collapsible with drag and drop support).
+- [Joyous](https://github.com/linuxsoftware/ls.joyous) - A calendar application for Wagtail.
 
 ## Tools