docs(README): added unit conversion example #577

	name: CI - full test suite
	on: [pull_request, push]

	jobs:
	full_test_suite:
	name: Run full test suite (Rust stable on ubuntu-latest)
	runs-on: ubuntu-latest
	env:
	RUSTFLAGS: -D warnings

	steps:
	- name: Checkout repository
	uses: actions/checkout@v3

	- name: Install Rust toolchain
	id: install-rust
	uses: dtolnay/rust-toolchain@stable

	# Cache based on OS/compiler.
	- name: Extract cache
	uses: actions/cache@v3
	with:
	path: \|
	~/.cargo
	!~/.cargo/registry/index
	!~/.cargo/git/checkouts
	target
	!target/tests
	!target/examples
	key: ${{ runner.os }}-${{ steps.install-rust.outputs.cachekey }}

	- name: Test all crates
	run: cargo test --all --verbose --features "use_serde"

	- name: Test si
	run: cargo test --verbose --no-default-features --features "f32 si"

	- name: Test all non-storage type features
	run: cargo test --verbose --no-default-features --features "autoconvert f32 si use_serde"

	- name: Test si with underlying storage types
	run: cargo test --verbose --no-run --no-default-features --features "autoconvert usize isize bigint bigrational complex32 si std use_serde"

	- name: Test all non-si features
	run: cargo test --verbose --no-run --no-default-features --features "autoconvert usize u8 u16 u32 u64 u128 isize i8 i16 i32 i64 i128 bigint biguint rational rational32 rational64 bigrational complex32 complex64 f32 f64 std use_serde"

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