View any D3 gist or bl.ocks on blockbuilder.org
This extension, inspired by bl.ocks.org, adds a blockbuilder.org button on both the gist and the bl.ocks pages.
This extension saves you having to modify the url manually to change sites.
blockbuilder.org is a very cool site for learning by example about D3js and sharing ideas.
The author is not affiliated with D3js or blockbuilder.org