Update README.md #9

	name: compile code
	on: [push, pull_request]
	jobs:
	build-linux:
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v2
	- name: setup gcc
	uses: egor-tensin/setup-gcc@v1
	with:
	version: latest
	platform: x64
	- name: build1
	run: cc -Wall -Wextra -Werror -pedantic sample1.c
	- name: build2
	run: cc -Wall -Wextra -Werror -pedantic sample2.c
	build-windows:
	runs-on: windows-latest
	steps:
	- uses: actions/checkout@v2
	- name: setup gcc
	uses: egor-tensin/setup-mingw@v2
	with:
	platform: x64
	- name: build1
	run: cc -Wall -Wextra -Werror -pedantic sample1.c
	- name: build2
	run: cc -Wall -Wextra -Werror -pedantic sample2.c

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