docs: Update CLI installation instructions and browser handling #28

Job	Run time
Runtime / Deno Lint	7s
Compiler / Lint and Check	25s
CLI / Lint and Check	1m 3s
Compiler / Test and Release	1m 11s
CLI / Release (x86_64-apple-darwin)	2m 52s
CLI / Release (aarch64-unknown-linux-musl)	3m 32s
CLI / Release (x86_64-unknown-linux-musl)	2m 32s
CLI / Release (aarch64-apple-darwin)	3m 3s
Runtime / Deno Test	36s
Std / test	1m 7s
Std / math	1m 27s
Host / storage	26s
Std / re	1m 35s
Host / dom	29s
Std / json	1m 25s
Host / network	30s
Host / time	24s
CLI / Test	1m 45s
Docs / Build	55s
Cloudflare Upload (CDN)	33s
Demo	26s
Docs / Deploy	27s
	26m 50s

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