mount an atproto PDS repository as a FUSE filesystem oppi.li/posts/mounting_the_atmosphere

Add installation to README #45

Merged danabra.mov
targeting main
Merged opened by and assigned to danabra.mov
targeting main
pdsfs is useful but you have to be a Rust nerd to know how to use it. I think it is valuable to document how to actually install it if there are no releases

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