The main repo lives at GoogleDeveloperExperts/experts-app-web. The new version, built on polymer-cli
currently lives in the polymer
branch.
My barebones MVP, which everyone is working off of, lives in this Google Doc (I added you, you should have an invite to that doc): https://docs.google.com/document/d/1bZIIR9yUOMI8dZzmPRyIGVPUO9Ov85Xq31FWbpRHnHQ/edit