Add `package.json` file to enable installing with npm

This file makes it possible to install the building blocks with
[npm](http://npmjs.com) - even if you don't put it on npm.
`author` is not actually needed as field
Updated latest shared/style folders from gaia
Updated latest shared/style folders from gaia
Updated latest shared/style folders from gaia
Updated latest shared/style folders from gaia
Updated latest shared/style folders from gaia
Updated latest shared/style folders from gaia
Updated latest shared/style folders from gaia
Updated latest shared/style folders from gaia
Updated latest shared/style folders from gaia
Updated latest shared/style folders from gaia
Updated latest shared/style folders from gaia
Updated latest shared/style folders from gaia
Updated latest shared/style folders from gaia
fix broken mailing list URL
Update bower instructions to install latest version

Installation via github will pull the latest building blocks. The
website also shows the latest version of Building-Blocks. Therefore the
bower instructions should also install the latest version.
Updated latest shared/style folders from gaia
Updated latest shared/style folders from gaia
Updated latest shared/style folders from gaia