add mixbox for python

python/examples/pillow.py

@@ -0,0 +1,16 @@
+from PIL import Image
+import mixbox
+
+rgb1 = (0, 33, 133)  # blue
+rgb2 = (252, 211, 0) # yellow
+
+img = Image.new('RGB', (256, 256))
+
+pixels = img.load()
+
+width,height = img.size
+for x in range(width):
+    for y in range(height):
+    	pixels[x, y] = mixbox.lerp(rgb1, rgb2, x / 256.0)
+
+img.show()