Added/tweaked comments and blank lines in demo programs of all language versions except JavaScript.

python/qrcodegen-demo.py

@@ -28,8 +28,6 @@ from __future__ import print_function
 import qrcodegen
 
 
-# ---- Main program ----
-
 def main():
 	"""The main application program."""
 	do_basic_demo()
@@ -38,6 +36,9 @@ def main():
 	do_mask_demo()
 
 
+
+# ---- Demo suite ----
+
 def do_basic_demo():
 	"""Creates a single QR Code, then prints it to the console."""
 	text = u"Hello, world!"               # User-supplied Unicode text