Added LibreNMS to administration & monitoring section

README.md

@@ -248,6 +248,7 @@ CMS are a practical way to setup a website with many features. CMS often come wi
   * [adminer](http://www.adminer.org/) -  Database management in a single PHP file ([Source code](https://github.com/vrana/adminer))
   * [Icinga / Icinga 2](https://www.icinga.org/) - Nagios fork that has since lapped nagios several times. Comes with the possibility of clustered monitoring - ([SourceCode](https://github.com/Icinga)) - `GPLv2`
   * [linux-dash](https://github.com/afaqurk/linux-dash) - A drop-in, low-overhead monitoring web dashboard for a linux machine ([Demo](http://afaq.dreamhosters.com/linux-dash/))
+  * [LibreNMS](http://www.librenms.org/) - Community-based GPL-licensed network monitoring system - `GPL-v3.0`
   * [Nagios](https://www.nagios.org/) - Industry standard monitoring software, which has a lot of plugins and customisation posibilities. - `GPL`
   * [phpSysInfo](https://phpsysinfo.github.io/phpsysinfo/) - a customizable PHP script that displays information about your system nicely ([Demo](http://phpsysinfo.sourceforge.net/phpsysinfo/index.php?disp=bootstrap))
   * [psdash](https://github.com/Jahaja/psdash) - A linux system information web dashboard using psutils and flask