README: Add Homebrew install method

[indianets]

Got wush added to Homebrew/homebrew-core repo
Homebrew/homebrew-core#183296

This submission is approved, and should be added in master branch soon.

Please review the wordings in README and edit/suggest changes which suits the project and you.

[indianets]

wush has been added to Hombrew

% brew install wush
==> Downloading https://formulae.brew.sh/api/formula.jws.json
-=O=-  #     #        #         #                                                                                                                                                   
==> Downloading https://formulae.brew.sh/api/cask.jws.json
-#O=#    #      #                                                                                                                                                                   

==> Downloading https://ghcr.io/v2/homebrew/core/wush/manifests/0.1.2
Already downloaded: /Users/vijay/Library/Caches/Homebrew/downloads/fbc2d03a22000ba89695dfc65fe8477e73ba37ce2481cbbae2d1a0de9b297527--wush-0.1.2.bottle_manifest.json
==> Fetching wush
==> Downloading https://ghcr.io/v2/homebrew/core/wush/blobs/sha256:55be2f80aef9e2edd1dc8ccd5d4446564ef4d867694d4688c12871f0bf1b552e
Already downloaded: /Users/vijay/Library/Caches/Homebrew/downloads/8eb3e9022667cddc247fe35f3ef965e8dccadd66b21211b57737f7248129099c--wush--0.1.2.arm64_sonoma.bottle.tar.gz
==> Pouring wush--0.1.2.arm64_sonoma.bottle.tar.gz
🍺  /opt/homebrew/Cellar/wush/0.1.2: 6 files, 32MB
==> Running `brew cleanup wush`...
Disable this behaviour by setting HOMEBREW_NO_INSTALL_CLEANUP.
Hide these hints with HOMEBREW_NO_ENV_HINTS (see `man brew`).

[indianets]

Formula page: https://formulae.brew.sh/formula/wush

Formula definition: https://github.com/Homebrew/homebrew-core/blob/HEAD/Formula/w/wush.rb

% brew info wush
==> wush: stable 0.1.2 (bottled)
Transfer files between computers via WireGuard
https://github.com/coder/wush
Installed
/opt/homebrew/Cellar/wush/0.1.2 (6 files, 32MB) *
  Poured from bottle using the formulae.brew.sh API on 2024-09-04 at 11:53:15
From: https://github.com/Homebrew/homebrew-core/blob/HEAD/Formula/w/wush.rb
License: CC0-1.0
==> Dependencies
Build: go ✔
==> Analytics
install: 66 (30 days), 66 (90 days), 66 (365 days)
install-on-request: 66 (30 days), 66 (90 days), 66 (365 days)
build-error: 0 (30 days)

[matifali]

LGTM. A minor suggestion
Thank you for your contribution.