Move layout examples under examples/ dir
Generate collection of layout examples dynamically and improve listing

This using a crazy way of rendering the layouts to gather their metadata
and uses that to create the colleciton of layout examples. The overview
page which lists the layout examples has been improved and is now
dynamically generated.
Regen npm-shrinkwrap.json
Add code comments for how the layout example metadata is generated
Fix spelling error in code comment
Merge branch 'layout-browser'
Bump version of Pure to 0.3.0-rc-3