Semiotic is now under the nteract org at https://github.com/nteract/semiotic
If you're looking for documentation please check out https://semiotic.nteract.io/
If you have any issues with the docs please leave issues at https://github.com/nteract/semiotic-docs
If you'd like to chat about Semiotic come by https://slack.nteract.io and look for the #semiotic channel