Add chapter on regular expressions #63

	name: Build HTML

	on:
	push:
	branches: [master]
	pull_request:
	branches: [master]

	# Allows running workflow manually
	workflow_dispatch:

	jobs:
	build:
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v2
	- name: install asciidoctor
	run: sudo apt-get install -y asciidoctor
	- name: Build the site using asciidoctor
	run: make
	- uses: actions/upload-artifact@v2
	with:
	name: book.html
	path: book.html

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