Write a CodeofConduct.

[TKirtan]

As we are receiving many pull requests daily and a lot of them are invalid due to copywrite files, only typo chances and such.
This repository needs a CodeofConduct.md where contribution guidelines should be mentioned properly.

Anyone who can write CodeofConduct properly, comment on this issue, I'll assign you the task.
It should be clear and professional so I recommend first time contributors not to try for this issue.

[jsvigneshkanna]

Assign this issue to my name

[Harshitaakri]

Assign this issue to me