[FEATURE] Add Installation Instructions to README

[flowcool]

Hello,

Sorry for dumb question, but how to install it as usually jelly is looking for a manifest.json

Many thanks !

[anultravioletaurora]

Hi @flowcool!

thank you for the interest! we are actively working on getting this created, so there are no install instructions at the moment

I'll leave this open though for tracking on when we add the install instructions! 💜