Update todo5.txt

fffaraz · fffaraz · commit abecee6ae452 · 2015-10-19T11:07:43.000-05:00
diff --git a/todo5.txt b/todo5.txt
@@ -6,3 +6,5 @@ https://github.com/google/brotli
 https://github.com/google/zopfli
 https://github.com/google/styleguide
 https://github.com/WhisperSystems/libaxolotl-c
+
+http://gameprogrammingpatterns.com/
