jekyll/jekyll — pull request #1939 by konklone (2014-01-13 17:53:15+00:00)
Title: Allow .geojson and .topojson to get served as JSON

I don't think GeoJSON and TopoJSON have their own mime type -- but they increasingly have their own file extension, especially [on Github](https://github.com/blog/1541-geojson-rendering-improvements).