Updated SVG with background example size

README.md

@@ -41,7 +41,7 @@ img.save_bmp('red.bmp') # BMPs are uncompressed, eat HD (3.05 KB)
 img.save_png('red.png') # PNGs are compressed, eat CPU (100 bytes)
 # SVGs are vector based, CPU and HD usage varies
 img.save_svg('red1.svg') # Without background (1.87 KB)
-img.save_svg('red2.svg', 255, 0, 0) # With red background (126 bytes)
+img.save_svg('red2.svg', 255, 0, 0) # With red background (114 bytes)
 ```
 
 You can also load BMPs and PNGs, but PNGs already exploded for me with ZLib deflating under Ruby 1.8.7.