Developing d3 visualizations

I have started using the following workflow and it's been working out great:

1. I start a gist with a README.md file to describe the requirements along with any sample design mockups as an embedded image for a reference.
2. I then clone that gist locally.
3. I add a simple index.html and a chart.js to the repo
4. I start a skeleton of a function as described in Towards Reusable Charts
5. I add some sample data in a data.csv file.
6. Make an initial commit to mark my starting point.

From here, I just start building out the visualization I want. To preview things locally, I run:

python -m SimpleHTTPServer 8888

Once I am satisfied with progress, I commit, and then push to the gist. The nice thing about hosting in this format in a GitHub gist is that you can use the bl.ocks.org service to get a nice preview of your visualization.