Updated Smart OS description (kaiiyer#21)

* Updated Smart OS description

* Updated CONTRIBUTING.md

Added comments for add, commit and push git commands,

CONTRIBUTING.md

@@ -14,13 +14,19 @@ Make your changes
  - Add any new useful links to resources with respect to pentesting and vulnerable testintg environments
  - Add your name to the CONTRIBUTORS.md file
 
-Commit and push
+Commit and push 
 
     git add .
 
+    //It is used to stage the changed file. 
+
     git commit -m 'Commit message'
+
+    //It is used to commit the file with a short message.
 
     git push origin branch-name
+
+    //It is used to push the file into the local repository.
 
 Create a new pull request from your forked repository (Click the New Pull Request button located at the top of your repo)
 

README.md

@@ -126,7 +126,7 @@ Compass Security is a well renowned European company specializing in penetration
 - [MCIR 	](https://github.com/SpiderLabs/MCIR) - The Magical Code Injection Rainbow! MCIR is a framework for building configurable vulnerability testbeds. MCIR is also a collection of configurable vulnerability testbeds. 
 - [Vagrant 	](https://www.vagrantup.com/) - Development Environments Made Easy
 - [NETinVM 	](https://informatica.uv.es/~carlos/docencia/netinvm/) - A tool for teaching and learning about systems, networks and security
-- [SmartOS 	](https://smartos.org/) - Converged Container and Virtual Machine Hypervisor
+- [SmartOS 	](https://smartos.org/) - SmartOS is a free and open-source SVR4 hypervisor based on the UNIX operating system that combines OpenSolaris technology with Linux's KVM virtualization.
 - [SmartDataCenter 	](https://github.com/joyent/sdc) - Joyent Triton DataCenter: a cloud management platform with first class support for containers. 
 - [vSphere Hypervisor 	](https://www.vmware.com/products/vsphere-hypervisor/) - vSphere Hypervisor is a bare-metal hypervisor that virtualizes servers; allowing you to consolidate your applications while saving time and money managing your IT infrastructure. 
 - [GNS3 	](http://sourceforge.net/projects/gns-3/) - Build, Design and Test your network in a risk-free virtual environment and access the largest networking community to help.