Update 00-about.md

Author: mevdschee

00-about.md

@@ -21,7 +21,6 @@ Mainly to make it easy to learn for PHP developers.
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 <a href='/installation/' style="text-decoration: none; color: white; background-color: #21a900; padding: 10px 20px; margin-right: 30px;">Download</a>
-<a href='http://maurits.server.nlware.com/' style="text-decoration: none; color: white; background-color: #21a900; padding: 10px 20px; margin-right: 30px;">Demo</a>
 <a href='https://github.com/mintyphp/mintyphp' style="text-decoration: none; color: white; background-color: #21a900; padding: 10px 20px; margin-right: 30px;">Github</a>
 
 <br/>
@@ -30,4 +29,4 @@ Mainly to make it easy to learn for PHP developers.
 
 - [MindaPHP: a new PHP framework optimized for learning](https://www.leaseweb.com/labs/2013/10/mindaphp-new-php-framework-optimized-learning/)
 - [MintyPHP now on packagist!](https://tqdev.com/2018-mindaphp-now-on-packagist)
-- [Reduce the mental load for developers](https://tqdev.com/2018-web-development-made-simple)
+- [Reduce the mental load for developers](https://tqdev.com/2018-web-development-made-simple)