added ko-fi link

README.md

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-[![Crates.io](https://img.shields.io/crates/v/jacquard.svg)](https://crates.io/crates/jacquard) [![Documentation](https://docs.rs/jacquard/badge.svg)](https://docs.rs/jacquard)
+[![Crates.io](https://img.shields.io/crates/v/jacquard.svg)](https://crates.io/crates/jacquard) [![Documentation](https://docs.rs/jacquard/badge.svg)](https://docs.rs/jacquard) [![ko-fi](https://ko-fi.com/img/githubbutton_sm.svg)](https://ko-fi.com/S6S8170HQ8)
 
 # Jacquard
 
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 [Jacquard is simpler](https://alpha.weaver.sh/nonbinary.computer/jacquard/jacquard_magic) because it is designed in a way which makes things simple that almost every other atproto library seems to make difficult.
 
 It is also designed around zero-copy/borrowed deserialization: types like [`Post<'_>`](https://tangled.org/nonbinary.computer/jacquard/blob/main/crates/jacquard-api/src/app_bsky/feed/post.rs) can borrow data (via the [`CowStr<'_>`](https://docs.rs/jacquard/latest/jacquard/cowstr/enum.CowStr.html) type and a host of other types built on top of it) directly from the response buffer instead of allocating owned copies. Owned versions are themselves mostly inlined or reference-counted pointers and are therefore still quite efficient. The `IntoStatic` trait (which is derivable) makes it easy to get an owned version and avoid worrying about lifetimes.
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 ## Features