docs: Create a README and getting started guide #92

	name: CI
	on: [pull_request, workflow_dispatch]

	jobs:
	test-example:
	runs-on: ${{ matrix.os }}
	strategy:
	matrix:
	os: [ubuntu-latest, macos-latest]
	rust:
	- stable
	steps:
	- uses: actions/checkout@v3
	- uses: ./.github/actions/libextism

	- name: Install Rust
	uses: actions-rs/toolchain@v1
	with:
	toolchain: ${{ matrix.rust }}
	override: true

	- name: Install wasm32 target
	run: rustup target add wasm32-unknown-unknown

	- name: Build plugins
	run: make -B plugins

	- name: Test call command
	run: \|
	TEST=$(extism call test/code.wasm count_vowels --input "this is a test" --set-config='{"thing": "1", "a": "b"}')
	echo $TEST \| grep '"count":4'
	echo $TEST \| grep '"config":"1"'
	echo $TEST \| grep '"a":"this is var a"'
	echo $TEST \| grep '"b":"new_value"'

	TEST=$(extism call test/http.wasm http_get --allow-host '*' --input '{"url": "https://jsonplaceholder.typicode.com/todos/1"}')
	echo $TEST \| grep '"userId": 1'

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