Update README.md with a simpler install command #646

Job	Run time
plan	23s
build-local-artifacts (x86_64-unknown-linux-musl)	3m 29s
build-local-artifacts (aarch64-unknown-linux-musl)	5m 47s
build-global-artifacts	22s
host	0s
announce	0s
custom-bump-action	0s
	10m 1s

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