Update Makefile
Dispatch change event on <mkt-tabs>
Build
Include extra assets in build
Pull document-register-element from bower
Always load assets from /marketplace-elements/dist/
File type in path of assets
Make close button styles generic in marketplace banner

Previously the styles were specific to the only banner that was
using the close button (the incompatibility one), but there is
going to be other banners using it, so make it generic.
Merge pull request #2 from diox/marketplace-update-banner

Make close button styles generic in marketplace banner
Bump bower.json
Fix path to firefox logo

(The css lives in src/media/css/lib/, the logo is in src/media/img/)
Bump bower.json again to get the logo path fix
Bump dist css as well.
work with python simplehttpserver
use fireplace's official stylus lib
Include the source in example
add styling to demo page
link to demo page in README
rm lib styl
add gh-page assets to gh-page folder