arrange code
Merge branch 'master' of https://github.com/luzheqi1987/LeetCode.git

Conflicts:
	LeetCode/bin/lzq/leetcode/BinaryTreeMaximumPathSum.class
	LeetCode/bin/lzq/leetcode/CombinationSumII.class
	LeetCode/bin/lzq/leetcode/TreeNode.class
	LeetCode/src/lzq/leetcode/BinaryTreeMaximumPathSum.java
	LeetCode/src/lzq/leetcode/TreeNode.java
	LeetCode/src/lzq/leetcode/util/TreeNode.java