Update README.md #166

	name: Changelog

	on:
	pull_request:
	types: [closed]

	release:
	types: [published]

	issues:
	types: [closed, edited]

	jobs:
	generate_changelog:
	runs-on: ubuntu-latest
	name: Generate changelog for master branch
	steps:
	- uses: actions/checkout@v2
	with:
	fetch-depth: 0 # otherwise, you will failed to push refs to dest repo

	- name: Generate changelog
	uses: charmixer/auto-changelog-action@v1
	with:
	token: ${{ secrets.GITHUB_TOKEN }}

	- name: Commit files
	env:
	ACTION_EMAIL: action@github.com
	ACTION_USERNAME: GitHub Action
	run: \|
	git config --local user.email "$ACTION_EMAIL"
	git config --local user.name "$ACTION_USERNAME"
	git add CHANGELOG.md && git commit -m 'Updated CHANGELOG.md' && echo ::set-env name=push::1 \|\| echo "No changes to CHANGELOG.md"

	- name: Push changes
	if: env.push == 1
	env:
	# CI_USER: ${{ secrets.YOUR_GITHUB_USER }}
	CI_TOKEN: ${{ secrets.CHANGELOG_GITHUB_TOKEN }}
	run: \|
	git push "https://$GITHUB_ACTOR:$CI_TOKEN@github.com/$GITHUB_REPOSITORY.git" HEAD:master

	# - name: Push changelog to master
	# if: env.push == 1
	# uses: ad-m/github-push-action@master
	# with:
	# github_token: ${{ secrets.CHANGELOG_GITHUB_TOKEN }}
	# branch: master

	# - name: Cherry-pick changelog to development
	# if: env.push == 1
	# env:
	# ACTION_EMAIL: action@github.com
	# ACTION_USERNAME: GitHub Action
	# run: \|
	# git config --local user.email "$ACTION_EMAIL"
	# git config --local user.name "$ACTION_USERNAME"
	# commit_hash=`git show HEAD \| egrep commit\ .+$ \| cut -d' ' -f2`
	# git checkout development
	# git pull
	# git cherry-pick $commit_hash
	# git push

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