12 Oct 2017:modify the README.md

Jack-Cherish · Jack-Cherish · commit fea379ebd398 · 2017-10-12T09:22:18.000+08:00
diff --git a/README.md b/README.md
@@ -33,6 +33,7 @@
 | 206  |      *     | Reverse Linked List                      | [Python](https://github.com/Jack-Cherish/LeetCode/blob/master/Linked%20List/Easy/206.Reverse%20Linked%20List/Reverse%20Linked%20List.py "悬停显示") | [C-迭代](https://github.com/Jack-Cherish/LeetCode/blob/master/Linked%20List/Easy/206.Reverse%20Linked%20List/Reverse%20Linked%20List-iteratively.c "悬停显示") [C-递归](https://github.com/Jack-Cherish/LeetCode/blob/master/Linked%20List/Easy/206.Reverse%20Linked%20List/Reverse%20Linked%20List-recursively.c "悬停显示")| [博客思路讲解](http://blog.csdn.net/c406495762/article/details/60884576 "悬停显示") |
 | 234  |      *     | Palindrome Linked List                   | [Python](https://github.com/Jack-Cherish/LeetCode/blob/master/Linked%20List/Easy/234.Palindrome%20Linked%20List/Palindrome.py "悬停显示") | [C++](https://github.com/Jack-Cherish/LeetCode/blob/master/Linked%20List/Easy/234.Palindrome%20Linked%20List/Palindrome%20Linked%20List.cpp "悬停显示") | [博客思路讲解](http://blog.csdn.net/c406495762/article/details/64443419 "悬停显示") |
 | 237  |    Easy    | Delete Node in a Linked List             | [Python](https://github.com/Jack-Cherish/LeetCode/blob/master/Linked%20List/Easy/237.Delete%20Node%20in%20a%20Linked%20List/Delete%20Node%20in%20a%20Linked%20List.py "悬停显示") | [C](https://github.com/Jack-Cherish/LeetCode/blob/master/Linked%20List/Easy/237.Delete%20Node%20in%20a%20Linked%20List/Delete%20Node%20in%20a%20Linked%20List.c "悬停显示") | no |
+| 2   |    Medium    | Add Two Numbers                   | [Python](https://github.com/Jack-Cherish/LeetCode/blob/master/Linked%20List/Medium/2.Add%20Two%20Numbers.md "悬停显示") | [C++](https://github.com/Jack-Cherish/LeetCode/blob/master/Linked%20List/Medium/2.Add%20Two%20Numbers.md "悬停显示") | [思路讲解](https://github.com/Jack-Cherish/LeetCode/blob/master/Linked%20List/Medium/2.Add%20Two%20Numbers.md "悬停显示") |
 | 61   |   Medium   | Rotate                                   | [Python](https://github.com/Jack-Cherish/LeetCode/blob/master/Linked%20List/Medium/61.Rotate%20List/Rotate%20List.py "悬停显示") | [C++](https://github.com/Jack-Cherish/LeetCode/blob/master/Linked%20List/Medium/61.Rotate%20List/Rotate%20List.cpp "悬停显示") | [博客思路讲解](http://blog.csdn.net/c406495762/article/details/65626314 "悬停显示") |
 
 ### Stack(栈)
