A lot of work on the presentation

The shell auto-image now runs code and turns the output into an image
that is embedded into the document

The prompt is configurable in /bin/prompt

The first draft is done up until the references section

code-examples/python-start.py

@@ -0,0 +1,6 @@
+import sys
+    def main():
+        print("Hello")
+
+    if __name__ == "__main__":
+        main()