Update README.md (#70)

In this particular example, I showcase how to:
 - send message events only to the target recipient and sender.
 - disable ssl verification for [Heroku Postgres](https://devcenter.heroku.com/changelog-items/852)
 - styling with [Sassy Css (Scss - Syntactically Awesome Style Sheet)](https://sass-lang.com/guide)

README.md

@@ -16,6 +16,7 @@
     - [Articles and Blog Posts](#articles-and-blog-posts)
     - [Examples](#examples)
       - [Feathers-Chat](#feathers-chat)
+      - [Feathers-Scss-Postgres-Chat-App](https://github.com/jermsam/Feathers-Scss-Postgres-Chat-App)
       - [React](#react)
       - [Vue](#vue)
       - [Angular](#angular)