Do a better fix than 7dba4c0b52b8bcf8a529fa01e0286c7d9dcf415c (based on #739

	name: gh-pages

	on:
	push:
	pull_request:

	jobs:
	skip:
	runs-on: ubuntu-latest
	steps:
	- run: echo "Skip job"

	before:
	runs-on: ubuntu-latest
	if: "! contains(github.event.head_commit.message, '[skip ci]')"
	steps:
	- run: echo "not contains '[skip ci]'"

	docs:
	runs-on: ubuntu-latest
	continue-on-error: true
	needs: before
	steps:
	- uses: actions/checkout@v1

	- name: Set cache-key
	id: vars
	run: echo ::set-output name=cache-key::$(date +%Y-%m-%d)

	- name: Cache choosenim
	id: cache-choosenim
	uses: actions/cache@v1
	with:
	path: ~/.choosenim
	key: ${{ runner.os }}-choosenim-${{ steps.vars.outputs.cache-key }}
	- name: Cache nimble
	id: cache-nimble
	uses: actions/cache@v1
	with:
	path: ~/.nimble
	key: ${{ runner.os }}-nimble-${{ hashFiles('*.nimble') }}
	- uses: jiro4989/setup-nim-action@v1
	with:
	nim-version: 'devel --latest'

	- name: Generate API documents
	run: (echo 'cligen'; grep -rl '##' cligen \| grep -v clCfg) \| sed -e's/.nim//' -e's/^/import /' > all.nim; nim doc --path=. --project --outdir:docs all.nim

	- name: Deploy documents
	uses: peaceiris/actions-gh-pages@v3
	with:
	github_token: ${{ secrets.GITHUB_TOKEN }}
	publish_dir: ./docs
	if: github.ref == 'refs/heads/master'

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