Update README.md

kedebug · kedebug · commit 3b18d06b72cf · 2013-06-27T21:23:35.000+08:00
diff --git a/README.md b/README.md
@@ -4,8 +4,8 @@ leetcode
 Solution set for LeetCode.
 
 The commit message of each problem stands for it's difficulty index, which means:
-- 1 easy
-- 2 normal
-- 3 normal, and tricky
-- 4 hard
-- 5 hard, and tricky
+- 1 Easy
+- 2 Normal
+- 3 Medium
+- 4 Hard
+- 5 More Hard
