Add chat button

README.md

@@ -1,6 +1,9 @@
 reader
 ------
 
+[![Static 
+Badge](https://img.shields.io/badge/Join_on_Matrix-green?style=for-the-badge&logo=element&logoColor=%23ffffff&label=Chat&labelColor=%23333&color=%230DBD8B&link=https%3A%2F%2Fmatrix.to%2F%23%2F%2521PHlbgZTdrhjkCJrfVY%253Amatrix.org)](https://matrix.to/#/%21PHlbgZTdrhjkCJrfVY%3Amatrix.org)
+
 *reader* is for your command line what the “readability” view is for modern
 browsers: A lightweight tool offering better readability of web pages on the
 CLI.