Add DirectoryLister

Closes #239

README.md

@@ -530,6 +530,7 @@ Some [Groupware](#groupware) solutions also feature file sharing and synchroniza
 #### Web based file managers
 
   * [Apaxy](http://adamwhitcroft.com/apaxy/) - Theme built to enhance the experience of browsing web directories, using the mod_autoindex Apache module and some CSS to override the default style of a directory listing. ([Source Code](https://github.com/AdamWhitcroft/Apaxy) `Public domain` `CSS`
+  * [DirectoryLister](http://www.directorylister.com/) - A simple PHP based directory lister that lists a directory and all it's sub-directories and allows you to navigate there within. ([Source code](https://github.com/DirectoryLister/DirectoryLister)) `MIT` `PHP`
   * [eXtplorer](http://extplorer.sourceforge.net/) - A PHP and JavaScript based File Manager
   * [explorer](https://github.com/soyuka/explorer) - Highly-configurable directory listing made with nodejs. ([Source Code](https://github.com/soyuka/explorer))`MIT` `Nodejs`
   * [goBrowser](https://github.com/xataz/gobrowser) Simple http file browser. ([Source Code](https://github.com/xataz/gobrowser)) `GPLv3` `Go`