'completed-demo' branch isn't actually completed demo

[apowers313]

Steps to reproduce:

git clone https://github.com/fido-alliance/webauthn-demo/
cd webauthn-tutorial
git checkout completed-demo
npm install
node app &
open http://localhost:3000

Browser shows that the password box is still there (which would be gone in the completed demo).

[yackermann]

Resolved