Set initial header level to <h2> explicitly because after removing
HEADER.rst top level headers become <h1> and so doesn't properly highlighted.
--- a/Makefile Mon Feb 22 14:15:04 2016 +0200
+++ b/Makefile Mon Feb 22 14:21:18 2016 +0200
@@ -34,7 +34,7 @@
endif
RST_WARNING_FLAGS := --halt warning
-RST_RENDER_FLAGS := --strip-comments --embed-stylesheet --no-xml-declaration --math-output=MathJax
+RST_RENDER_FLAGS := --strip-comments --embed-stylesheet --no-xml-declaration --math-output=MathJax --initial-header-level=2
RST_FLAGS := $(RST_WARNING_FLAGS) $(RST_RENDER_FLAGS)
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