README: update submodule update
Include samples directory
Styling reference: polyfill prefixes the rules with the element name
More examples for styling ref
More app-bar scroll effect
More app-bar scroll effect
CORs-enabled polymer.js and polymer.html
Merge branch 'master' of github.com:Polymer/docs
Fixing regex
Merging master
Scrolling, leftnav, and refactor work