Revert "skip the restaurant demo temporarily"
Revert "skip the restaurant demo temporarily"

This reverts commit 7671a0344d9c2148d587d96c7ecdf801a8ea74de.

> git revert 7671a0344d9c2148d587d96c7ecdf801a8ea74de

PolymerLabs/arcs,PolymerLabs/arcs,PolymerLabs/arcs,PolymerLabs/arcs,PolymerLabs/arcs,PolymerLabs/arcs,PolymerLabs/arcs,PolymerLabs/arcs