add GitHub Actions to auto update md5sum #1

	name: md5sum
	on:
	push:
	paths:
	- 'handlers/*.lua'
	- '.github/workflows/md5sum.yml'

	jobs:
	Build:
	runs-on: ubuntu-latest
	steps:
	- name: Check out code
	uses: actions/checkout@v2

	- name: Set up Git
	env:
	GITHUB_TOKEN: ${{ secrets.GH_TOKEN }}
	run: \|
	git config user.name "auto-md5sum[bot]"
	git config user.email "auto-md5sum[bot]@users.noreply.github.com"
	git remote set-url origin https://x-access-token:${GITHUB_TOKEN}@github.com/${GITHUB_REPOSITORY}.git

	- name: update
	run: \|
	cd handlers
	md5sum *.lua > md5sum.txt
	git commit -m "auto update md5sum at $(date)" md5sum.txt
	git push -f origin master

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