A new version of https://nteract.io/ is out, I will try today to push that new infomation to http://caskroom.io/ by creating a new cask for this application. I will base things on this previous contribution where I was simply editing an existing cask.
getting the token
"$(brew --repository)/Library/Taps/caskroom/homebrew-cask/developer/bin/generate_cask_token" '/Applications/nteract.app'
cd "$(brew --prefix)"/Homebrew/Library/Taps/caskroom/homebrew-cask github_user='laurentperrinet' project='nteract' git remote -v