added Prezi link and demo code

data/lightning-scripts/bouncy.py

@@ -0,0 +1,36 @@
+#!/usr/bin/env python
+
+import sys, pygame
+
+BLACK = 0, 0, 0
+WHITE = 255, 255, 255
+
+pygame.init()
+screen = pygame.display.set_mode((640, 480))
+pygame.display.set_caption("Bouncy the Box")
+
+clock = pygame.time.Clock()
+
+box_x = 300
+box_dx = 4
+
+while True:
+	clock.tick(50)
+
+	for event in pygame.event.get():
+		if event.type == pygame.QUIT:
+			sys.exit()
+
+	screen.fill(BLACK)
+
+	box_x += box_dx
+	if box_x > 620:
+		box_x = 620
+		box_dx = -4
+	elif box_x <= 0:
+		box_x = 0
+		box_dx = 4
+
+	pygame.draw.rect(screen, WHITE, (box_x, 200, 20, 20))
+
+	pygame.display.flip()

data/lightning.txt

@@ -3,4 +3,4 @@ Ross +1
 Will +1
 AJ +1, http://www.csh.rit.edu/~ajman/floss/inform7/Inform7.html#/step-1
 AJ +1, pygame
-David +1, pygame
+David +1, pygame, http://prezi.com/5cy5q8iibxjg/introduction-to-pygame/