gh-pages out of date

[kfessel]

Readme.md advices to check https://bergzand.github.io/libcose/ for documentation which seems out of data to me

Dependencies:

    [cn-cbor](https://github.com/cabo/cn-cbor)
    Either [TweetNaCl](https://tweetnacl.cr.yp.to/) or [libsodium](https://github.com/jedisct1/libsodium) as crypto library
    A memory block allocator (can be malloc/calloc based)

vs

Dependencies:

    [NanoCBOR](https://github.com/bergzand/NanoCBOR)
    Either [HACL-C](https://github.com/mitls/hacl-c), [libsodium](https://github.com/jedisct1/libsodium) or [mbed TLS](https://tls.mbed.org/) as crypto library