Added YOURLS

Basically an extensible, self-hosted URL shortener with several plugins
to enhance base functionality.

README.md

@@ -20,6 +20,7 @@ Table of Contents
   * [RSS Readers](#rss-readers)
   * [Money & Budgeting](#money-budgeting)
   * [Analytics](#analytics)
+  * [URL Shorteners](#url-shorteners)
 
 ## Monitoring
 
@@ -76,3 +77,6 @@ Table of Contents
 ## Analytics
 
   * https://piwik.org/ - Piwik - Leading open-source analytics platform that gives you more than just powerful analytics. - GNU GPL 3.0
+
+## URL Shorteners
+  * https://github.com/YOURLS/YOURLS - YOURLS - YOURLS is a set of PHP scripts that will allow you to run Your Own URL Shortener.