Update to branch name to"main" for inclusive design language

[coryfink]

Describe the bug

It is important to build our technology with inclusive design language in order to foster an inclusive workplace where everyone feels they can belong. In order to achieve this, can we change our branch name from master to main?

To Reproduce

Steps to reproduce the behavior:

1. Go to branches dropdown
2. See master branch

Expected behavior

1. Change branch name from master to main and update in readme here .

Screenshots

[Vishesh-Paliwal]

@coryfink can I get assigned for this issue , I would love to work on it