Add Prometheus monitoring tool

README.md

@@ -321,6 +321,7 @@ CMS are a practical way to setup a website with many features. CMS often come wi
   * [LibreNMS](http://www.librenms.org/) - Community-based GPL-licensed network monitoring system - `GPLv3`
   * [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))
+  * [Prometheus](http://prometheus.io/) - Monitoring system and time series database. ([Source code](https://github.com/prometheus/prometheus)) `Apache` `Go`
   * [psdash](https://github.com/Jahaja/psdash) - A linux system information web dashboard using psutils and flask
   * [pyDash](https://github.com/k3oni/pydash) - Small web-based monitoring dashboard for linux ([Demo](http://pydash.hostechs.com/main/) - _admin/admin_)
   * [Reportr](http://www.reportr.io/) - Your life's personal dashboard. ([Source code](https://github.com/Reportr/dashboard))