Hic et nunc is shut down

[mrengy]

Should it be removed from the readme? Or should one of its alternatives mentioned in https://www.theartnewspaper.com/2021/11/16/founder-of-hic-et-nunc-pulls-the-plug-on-the-leading-digital-art-marketplacebut-its-half-a-million-nfts-live-on be put in its place?