Change `master` to `main` for instructions.

[akshatvg]

Rebasing, merging, etc say master in the current README which has been changed to main by GitHub as the default branch.

[issue-label-bot]

Issue-Label Bot is automatically applying the label feature_request to this issue, with a confidence of 0.71. Please mark this comment with 👍 or 👎 to give our bot feedback!

Links: app homepage, dashboard and code for this bot.

[Jan200101]

git init still creates a master branch by default.

[akshatvg]

@Jan200101 that's a good catch. So do you think we should write both separately or do you think we should just mention that it's an either or depending on how the repo is made?

I am thinking of the latter.

[Jan200101]

Yeah the latter would be the best