Add instructions to run the website codebase after installing it in different OS and environments

[tapaswenipathak]

To make the website and contributing to the codebase more beginner friendly we would be happy to add instructions about installing the website and making it up in your local in different operating systems, VMs, environments.

Please refer to this issue in your pull request with the instructions that you used to run the website in your local.

[devesh-verma]

@tapasweni-pathak @vaibhavsingh97 I would like to work for this. As I am pretty new to open-source and also I started off with open-source with help from open source help community. This will be a great opportunity for me.