add license and CLA
add patents file
fix line ending
Merge pull request #29 from azakus/master

Override for CustomElement cloneNode
unified test for whether or not a node can be added to the main document. Helps address https://github.com/Polymer/polymer/issues/155.
add AUTHORS file
modernize test structure, add attributes.html test
modernize test structure, add attributes.html test
don't stomp on user defined set/getAttributes
Merge branch 'master' of https://github.com/Polymer/CustomElements

Conflicts:
	src/CustomElements.js
simplify attributeChanged support overrides
simplify mixin, enforce enumerability on installed properties
support non-enumerable properties in HTMLElement prototypes (+test)
bootstrap immediately if document.readyState === 'complete', otherwise wait for 'DOMContentLoaded' instead of 'load'
also boostrap if in 'interactive' document.readyState
install .constructor on generated prototype to reference generated constructor
Update README.md
Update README.md
buildbot.git no longer required
migrate some parser features into HTMLImports, simplify boot code, set up 2-pass upgrade-before-live registration for polymer-element