doc: Make build instructions less confusing #302

	name: Benchmark
	on:
	push:
	branches: [ master ]
	pull_request:
	branches: [ master ]
	jobs:
	benchmark:
	name: Run Javascript Benchmark
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v2
	- uses: actions/setup-node@v1
	- name: Run benchmark
	run:
	sudo apt-get update;
	sudo apt-get install nodejs -y;
	npm i --save benchmark;
	npm i --save underscore;
	npm install --no-optional;
	cmake .;
	make -j all;
	node bench.js \| tee output.txt;
	git stash save;
	git config --local user.email "action@github.com";
	git config --local user.name "GitHub Action";
	- name: Store benchmark result
	uses: veg/github-action-benchmark@v1
	with:
	name: Benchmark.js Benchmark
	tool: 'benchmarkjsInverse'
	output-file-path: ./output.txt
	# Use personal access token instead of GITHUB_TOKEN due to https://git.luolix.topmunity/t5/GitHub-Actions/Github-action-not-triggering-gh-pages-upon-push/td-p/26869/highlight/false
	github-token: ${{ secrets.benchmark }}
	auto-push: true
	# Show alert with commit comment on detecting possible performance regression
	alert-threshold: '200%'
	comment-on-alert: true
	fail-on-alert: true
	alert-comment-cc-users: '@klevitz'

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