Use githubpages extension, rather than manually managing .nojekyll. Cleanup recommonmark usage

docsrc/Makefile

@@ -16,7 +16,6 @@ github:
 	@make html
 	rm -rf ../docs
 	@cp -a $(BUILDDIR)/html/. ../docs
-	touch ../docs/.nojekyll
 	@rm reference/changelog.md
 
 .PHONY: help Makefile

docsrc/conf.py

@@ -36,24 +36,17 @@ release = u''
 # Add any Sphinx extension module names here, as strings. They can be
 # extensions coming with Sphinx (named 'sphinx.ext.*') or your custom
 # ones.
-extensions = []
+extensions = [
+    'recommonmark',
+    'sphinx.ext.githubpages',
+]
 
 # Add any paths that contain templates here, relative to this directory.
 templates_path = ['_templates']
 
 # The suffix(es) of source filenames.
 # You can specify multiple suffix as a list of string:
-#
-
-# sphinx >= 1.4
-extensions = ['recommonmark']
-
-# sphinx <= 1.3
-from recommonmark.parser import CommonMarkParser
 source_suffix = ['.rst', '.md']
-source_parsers = {
-    '.md': CommonMarkParser,
-}
 
 # The master toctree document.
 master_doc = 'index'