Update install.md: Install via `brew` #761

	name: Kubernetes-sigs/krew CI
	on:
	push:
	branches:
	- '*'
	tags:
	- 'v..*'
	pull_request:
	branches:
	- '*'

	jobs:

	build:
	runs-on: ubuntu-latest
	steps:

	- name: Set up Go ${{ matrix.goVer }}
	uses: actions/setup-go@v3
	with:
	go-version: '1.20'
	id: go

	- name: Check out code into the Go module directory
	uses: actions/checkout@v3
	with:
	fetch-depth: 0

	- name: Install dependencies
	run: go mod download

	- name: Install gox
	run: hack/install-gox.sh

	- name: Ensure go.mod is already tidied
	run: go mod tidy && git diff --no-patch --exit-code

	- name: Verify code patterns
	run: hack/verify-code-patterns.sh

	- name: Verify boilerplate
	run: hack/verify-boilerplate.sh

	- name: Run code lint
	run: hack/run-lint.sh

	- name: Run unit tests
	run: go test -short ./...

	- name: Make binaries && verify krew installation
	run: hack/make-all.sh

	- name: Ensure kubectl installed
	run: hack/ensure-kubectl-installed.sh

	- name: Verify installation
	run: hack/verify-installation.sh

	- name: Run integration tests
	run: hack/run-integration-tests.sh

	- name: Verify index migration from 0.3.x to 0.4.x
	run: hack/verify-index-migration.sh

	- name: Make release notes
	if: contains(github.ref, 'tags')
	run: \|
	echo 'RELEASE_NOTES<<EOF' >> $GITHUB_ENV
	TAG=$GITHUB_REF_NAME hack/make-release-notes.sh >> $GITHUB_ENV
	echo 'EOF' >> $GITHUB_ENV

	- name: Create a new release
	if: contains(github.ref, 'tags')
	id: create_release
	uses: softprops/action-gh-release@v1
	with:
	name: Release ${{ github.ref_name }}
	files: out/krew*
	body: ${{ env.RELEASE_NOTES }}
	fail_on_unmatched_files: true

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