Update README.md

Author: yangarbiter

README.md

@@ -1,6 +1,6 @@
 # libact: Pool-based Active Learning in Python
 
-authors: [Yao-Yuan Yang](yyyang.me), Shao-Chuan Lee, Yu-An Chung, Tung-En Wu, Si-An Chen, [Hsuan-Tien Lin](http://www.csie.ntu.edu.tw/~htlin)
+authors: [Yao-Yuan Yang](http://yyyang.me), Shao-Chuan Lee, Yu-An Chung, Tung-En Wu, Si-An Chen, [Hsuan-Tien Lin](http://www.csie.ntu.edu.tw/~htlin)
 
 [![Build Status](https://travis-ci.org/ntucllab/libact.svg)](https://travis-ci.org/ntucllab/libact)
 [![Documentation Status](https://readthedocs.org/projects/libact/badge/?version=latest)](http://libact.readthedocs.org/en/latest/?badge=latest)