Add Discord invite badge to README #16

	name: QEMU Test
	on:
	pull_request:
	types: [synchronize, opened, reopened]
	jobs:
	run-tests:
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v3
	- name: "Initialize git submodules"
	run: \|
	git submodule update --init --recursive
	- name: "Install dependencies"
	run: \|
	sudo apt update
	sudo apt install make gcc nasm pkg-config grub-pc-bin mtools xorriso qemu qemu-kvm wget
	- name: "Run tests"
	working-directory: .
	run: make test
	timeout-minutes: 10

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