[build_docs] Try new feature of sphinx-1.6
[build_docs] Try new feature of sphinx-1.6

oesteban/mriqc,oesteban/mriqc,poldracklab/mriqc,poldracklab/mriqc,poldracklab/mriqc,oesteban/mriqc,poldracklab/mriqc,oesteban/mriqc