Update README.md

Author: Geekhyt

README.md

@@ -109,6 +109,10 @@
 
 - [200. 岛屿数量](https://github.com/Geekhyt/javascript-leetcode/issues/64)
 
+## 二分查找
+
+- [33. 搜索旋转排序数组](https://github.com/Geekhyt/javascript-leetcode/issues/70)
+
 ## 动态规划
 - [70. 爬楼梯](https://github.com/Geekhyt/javascript-leetcode/issues/38)
 - [一口气团灭 6 道股票算法](https://github.com/Geekhyt/javascript-leetcode/issues/45)