Fix url shorteners (#766)

* Add languages and licenses.

* Fix syntax Nimbus.

README.md

@@ -911,10 +911,10 @@ See https://staticsitegenerators.net and https://www.staticgen.com
 
 ## URL Shorteners
 
-  * [Lstu](https://github.com/ldidry/lstu) - _Let's SHorten That Url_ - Lightweight URL shortener
-  * [Nimbus](https://github.com/ethanal/nimbus) - A URL shortener and file sharer with a drag-and-drop OS X menu bar client and web interface - `MIT` `Python`
-  * [Polr](https://project.polr.me/) - A modern, minimalist, modular, and lightweight URL shortener. ([Source Code](https://github.com/Cydrobolt/polr))
-  * [YOURLS](http://yourls.org/) - YOURLS is a set of PHP scripts that will allow you to run Your Own URL Shortener. Features include password protection, URL customization, bookmarklets, statistics, API, plugins, jsonp. ([Source Code](https://github.com/YOURLS/YOURLS/), [Documentation](https://github.com/YOURLS/YOURLS/wiki)) `MIT`
+  * [Lstu](https://github.com/ldidry/lstu) - _Let's SHorten That Url_ - Lightweight URL shortener. `WTFPL` `Perl`
+  * [Nimbus](https://github.com/ethanal/nimbus) - A URL shortener and file sharer with a drag-and-drop OS X menu bar client and web interface. `MIT` `Python`
+  * [Polr](https://project.polr.me/) - A modern, minimalist, modular, and lightweight URL shortener. ([Source Code](https://github.com/Cydrobolt/polr)) `GPLv2` `PHP`
+  * [YOURLS](http://yourls.org/) - YOURLS is a set of PHP scripts that will allow you to run Your Own URL Shortener. Features include password protection, URL customization, bookmarklets, statistics, API, plugins, jsonp. ([Source Code](https://github.com/YOURLS/YOURLS/)) `MIT` `PHP`
 
 
 ## VPN