polymer-overlay: refactor example
update the process for contributing
adding section to talk about running tests
polymer-overlay: use polymer-scope=controller
polymer-overlay: don't make all hosts an overlay
use nada-theme for docs
mostly doc tweaks
make selector update selected when items change.
remove comments, gate itemsSelector usage on whether or not the target is the selector.
add noscript to elements
Use chrome packaged app storage apis

- Required when in packaged apps
fix missing ()
polymer-overlay: fix for polyfill
polymer-grid: allow external items
Revert "fix missing ()"

This reverts commit 6a3743bfe58c3711f6cca493023fd23dbe226511.
Revert "Use chrome packaged app storage apis"

This reverts commit 319c501fd1b3d24d2a76da26427cef62004aecbf.
adjust tests since polymer-selector now adds tap listener after ready()
Merge pull request #16 from hqmq/contributing

Update instructions for newbies like me to contribute.
add missing import and move isContainer to prototype
Merge pull request #18 from Polymer/master

8/8 master -> stable