Update tutorial format

tutorial/header.tex

@@ -30,6 +30,31 @@
 \usepackage{../adlin}
 \usepackage{../adlin-section}
 
+\lstset{
+  belowcaptionskip=1\baselineskip,
+  xleftmargin=6pt,
+  xrightmargin=0.25pt,
+  backgroundcolor=\color{lightgray!20!white},
+  basicstyle=\ttfamily,
+  breakatwhitespace=false,
+  breaklines=true,
+  commentstyle=\color{SeaGreen},
+  columns=fullflexible,
+  deletekeywords={echo}{source},
+  extendedchars=true,
+  frame=l,
+  framerule=1.2pt,
+  framesep=5pt,
+  keepspaces=true,
+  keywordstyle=\color{blue},
+  rulecolor=\color{black},
+  showspaces=false,
+  showstringspaces=false,
+  showtabs=false,
+  stringstyle=\color{purple},
+  tabsize=4
+}
+
 \makeatletter
 \pretocmd{\subsection}{\addtocontents{toc}{\protect\addvspace{-5\p@}}}{}{}
 \pretocmd{\subsubsection}{\addtocontents{toc}{\protect\addvspace{-6\p@}}}{}{}

tutorial/pandoc-opts.mk

@@ -2,6 +2,7 @@ PANDOCOPTS	= --pdf-engine=lualatex \
 		  --standalone \
 		  --number-sections \
 		  --toc \
+		  --listings \
 		  -f markdown+smart \
 		  -M fontsize=12pt \
 		  -M papersize=a4 \