Make indentation regular

Sorry! I have to start by doing this, or I get so distracted by
the indentation I can’t focus on the code. I know it doesn’t
really matter.
Demo Talkie/Leaflet integration
No need for D3

We’re not using Talkie.animate, so we don’t need D3.
Merge pull request #2 from robinhouston/gh-pages

Merge example code