Add Encode Explorer (#564)

* Encode Explorer

Encode Explorer is a file browser written in PHP, XHTML and CSS. It displays the list of files in a folder. It was designed to be used in safe mode and so it is kept simple and functional. Free for everyone.

* Fix Encode Explorer Description and Ordering

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`
+  * [Encode Explorer](http://encode-explorer.siineiolekala.net/) - Encode Explorer is a single page file browser, it is simple and functional. ([Demo](http://encode-explorer.siineiolekala.net/explorer/index.php), [Source Code](https://github.com/marekrei/encode-explorer)) `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`
@@ -538,6 +539,7 @@ Some [Groupware](#groupware) solutions also feature file sharing and synchroniza
   * [Sprut.io](https://sprut.io) - 2 panel file manager with drag and drop features, code editor, text search, hotkeys. ([Demo](https://demo.sprut.io:9443), [Source Code](https://github.com/LTD-Beget/sprutio)) `GPLv3` `Python`
   
 
+
 ## Games
 
   * [20euros](https://github.com/jatekos101/20euros) - Clone of 2048 game with euros. - Unlicensed