Update png_pong version in docs #74

	on: [push, pull_request]

	name: tests

	jobs:
	test:
	runs-on: ${{ matrix.os }}
	strategy:
	matrix:
	os: [ubuntu-latest, macos-latest, windows-latest]
	tc: [stable, beta, nightly]
	steps:
	- uses: actions/checkout@v2
	- uses: actions-rs/toolchain@v1
	with:
	profile: minimal
	components: rust-std
	toolchain: ${{ matrix.tc }}
	override: true
	- uses: actions-rs/cargo@v1
	with:
	command: test
	args: --all --all-features
	cross-compile:
	runs-on: ${{ matrix.os }}
	strategy:
	matrix:
	os: [ubuntu-latest]
	tc: [stable, beta, nightly]
	cc:
	- aarch64-linux-android
	- i686-pc-windows-gnu
	- i686-unknown-freebsd
	- i686-unknown-linux-gnu
	- wasm32-unknown-unknown
	- x86_64-apple-darwin
	- x86_64-unknown-redox
	steps:
	- uses: actions/checkout@v2
	- uses: actions-rs/toolchain@v1
	with:
	profile: minimal
	components: rust-std
	toolchain: ${{ matrix.tc }}
	target: ${{ matrix.cc }}
	override: true
	- uses: actions-rs/cargo@v1
	with:
	command: build
	args: --all-features --target=${{ matrix.cc }}
	cross-compile-ios:
	runs-on: ${{ matrix.os }}
	strategy:
	matrix:
	os: [macos-latest]
	tc: [stable, beta, nightly]
	cc: [aarch64-apple-ios]
	steps:
	- uses: actions/checkout@v2
	- uses: actions-rs/toolchain@v1
	with:
	profile: minimal
	components: rust-std
	toolchain: ${{ matrix.tc }}
	target: ${{ matrix.cc }}
	override: true
	- uses: actions-rs/cargo@v1
	with:
	command: build
	args: --all-features --target=${{ matrix.cc }}

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