doc: Add user and developers documentation scheme.

doc/dev/build.sh

@@ -0,0 +1,10 @@
+#! /bin/sh
+
+# Build the PDF
+
+emacs -Q -q -nw --batch                                 \
+      --eval "(require 'org)"                           \
+      --eval "(require 'ox-latex)"                      \
+      --eval "(load-file \"../tools/setup.el\")"        \
+      --file ./documentation.org                        \
+      -f org-latex-export-to-pdf