Update README to include homebrew installation

[VisheshBansal]

This update adds instructions for installing ‎container via Homebrew Cask to the README, making it easier for users to install or upgrade using Homebrew.

Resolves #139

Cheers,
Vishesh

[paranoidPhantom]

Great initiative

[egernst]

@VisheshBansal - thanks for the PR and initiative here. We are still evaluating how best to approach this on our side, so have been a bit delayed on providing clear guidance with the PR. Thanks of the patience - will follow up!

[VisheshBansal]

@VisheshBansal - thanks for the PR and initiative here. We are still evaluating how best to approach this on our side, so have been a bit delayed on providing clear guidance with the PR. Thanks of the patience - will follow up!

Sure @egernst, thanks for the response.

[p-linnane]

@egernst Hi there. I'm the Homebrew maintainer who added the cask. Please let me know if there's anything we can do to help on our end! 😃

[egernst]

@VisheshBansal - thanks again for making the PR.

For now we will hold off on adding homebrew documentation and can reopen this PR later if needed.