add Bosun, cadvisor, Kubernetes; Icinga description.

Remove some unneccessary spaces, instead add indentation.
harr harr, now this repo is incompatible with kahun's.

README.md

@@ -150,6 +150,7 @@
   * [Cloudify](http://www.getcloudify.org/) - TOSCA-based cloud orchestration software platform written in Python and YAML.
   * [CloudSlang](http://www.cloudslang.io/) - Flow-based orchestration tool for managing deployed applications, with Docker capabilities.
   * [Juju](https://juju.ubuntu.com/) - Cloud orchestration tool which manages services as charms, YAML configuration and deployment script bundles.
+  * [Kubernetes](http://kubernetes.io/) - Orchestration system for Docker containers - ([Source Code](https://github.com/kubernetes/kubernetes), [Documentation](http://kubernetes.io/v1.0/)) `Apache` `Go`
   * [MCollective](http://puppetlabs.com/mcollective) - Ruby framework to manage server orchestration, developed by Puppet labs.
   * [Overcast](http://andrewchilds.github.io/overcast/) - Deploy VMs across different cloud providers, and run commands and scripts across any or all of them in parallel via SSH.
   * [Rundeck](http://rundeck.org/) - Simple orchestration tool.
@@ -349,12 +350,14 @@ See https://github.com/kickball/awesome-selfhosted#email
 
   * [Adagios](http://adagios.org/) - Web based Nagios interface for configuration and monitoring (replacement to the standard interface), and a REST interface ([Demo](http://demo.adagios.org/), [SourceCode](https://github.com/opinkerfi/adagios), [Documentation](https://github.com/opinkerfi/adagios/wiki))
   * [Alerta](https://github.com/guardian/alerta) - Distributed, scaleable and flexible monitoring system.
+  * [Bosun](http://bosun.org/) - Monitoring and alerting system by Stack Exchange ([Source Code](https://github.com/bosun-monitor/bosun), [Documentation](http://bosun.org/quickstart.html)) `MIT` `Go`
   * [Cacti](http://www.cacti.net) - Web-based network monitoring and graphing tool.
   * [Cabot](http://cabotapp.com/) - Monitoring and alerts, similar to PagerDuty.
+  * [cadvisor](https://github.com/google/cadvisor) - Analyzes resource usage and performance characteristics of running containers ([Source Code](https://github.com/google/cadvisor)) `Apache` `Go`
   * [check_mk](http://mathias-kettner.com/check_mk.html) - Collection of extensions for Nagios.
   * [Dash](https://github.com/afaqurk/linux-dash) - A low-overhead monitoring web dashboard for a GNU/Linux machine.
   * [Flapjack](http://flapjack.io/) - Monitoring notification routing & event processing system.
-* [Icinga](https://www.icinga.org/) - Fork of Nagios.
+  * [Icinga](https://www.icinga.org/) - Nagios fork that has since lapped nagios several times. Comes with the possibility of clustered monitoring - ([Source Code](https://github.com/Icinga)) - `GPLv2`
   * [LibreNMS](http://www.librenms.org) - Fully featured network monitoring system that provides a wealth of features and device support.
   * [Monit](http://mmonit.com/monit/#home) - Small utility for managing and monitoring Unix systems.
   * [Munin](http://munin-monitoring.org/) - Networked resource monitoring tool.