start improving the code

Author: simongravelle

Diff for: docs/Makefile

@@ -1,5 +1,7 @@
 # Minimal makefile for Sphinx documentation
-#
+
+# The default target is "html"
+.DEFAULT_GOAL := html
 
 # You can set these variables from the command line, and also
 # from the environment for the first two.
@@ -14,6 +16,10 @@ help:
 
 .PHONY: help Makefile
 
+# Default target: build HTML documentation
+html:
+	@$(SPHINXBUILD) -M html "$(SOURCEDIR)" "$(BUILDDIR)" $(SPHINXOPTS) $(O)
+
 # Catch-all target: route all unknown targets to Sphinx using the new
 # "make mode" option.  $(O) is meant as a shortcut for $(SPHINXOPTS).
 %: Makefile