Yu Chuan is our help star again, thanks Yu Chuan!

baijing@crystal ~/todo/bin% ./help-star last

21.4 Wu Fengguang 13.5 Yu Chuan 12.2 Cao Xueliang 10.6 Lin Jiaxin 9.8 Wei Jihui 9.6 Bai Jing 8.6 Wang Yong 7.3 Luan Shengde 7.2 Wu Zhende 7.2 Xu Xijian 6.8 Zhang Dewan 6.3 Liu Yinsi 5.2 Liu Shaofei 4.0 Du Kaitian 3.0 Li Ping 2.6 Li Yuanchao 2.2 Lu Weitao 1.3 Wang Chenglong 1.0 Ren Wen 0.0 Zhang Yale 0.0 Cui Yili