Pip extra dependencies support has been merged upstream.

See: readthedocs/readthedocs-build#16

Author: kdeldycke

requirements/pip.txt

@@ -5,7 +5,7 @@ docutils==0.11
 Sphinx==1.3.5
 Pygments==2.0.2
 mkdocs==0.14.0
-git+https://github.com/kdeldycke/readthedocs-build.git@add-pip-extra-dependencies-yaml-support#egg=readthedocs-build-2.0.6.dev
+git+https://github.com/rtfd/readthedocs-build.git@ef2d91962aeb5391f21245d1e3c311e33785649d#egg=readthedocs-build-2.0.6.dev
 django==1.8.3
 
 django-tastypie==0.12.2