add pdf link
add pdf link

heaven00/DeepLearningTutorials,abergeron/DeepLearningTutorials,SYSUNLP/DeepLearningTutorials,OlafLee/DeepLearningTutorials,AveRapina/DeepLearningTutorials,cainiaocome/DeepLearningTutorials,cainiaocome/DeepLearningTutorials,NanYoMy/DeepLearningTutorials,NanYoMy/DeepLearningTutorials,pengsun/DeepLearningTutorials,mmolero/DeepLearningTutorials,OlafLee/DeepLearningTutorials,marchick209/DeepLearningTutorials,sha8e/DeepLearningTutorials,pengsun/DeepLearningTutorials,xuezhisd/DeepLearningTutorials,xuezhisd/DeepLearningTutorials,jorik041/DeepLearningTutorials,linan7788626/DeepLearningTutorials,webeng/DeepLearningTutorials,haojunyu/DeepLearningTutorials,FighterLYL/DeepLearningTutorials,yukoba/DeepLearningTutorials,iamtrask/DeepLearningTutorials,jyb002/DeepLearningTutorials,ericzhouh/DeepLearningTutorials,EugenePig/DeepLearningTutorials,iamtrask/DeepLearningTutorials,pombredanne/DeepLearningTutorials,heaven00/DeepLearningTutorials,liangz0707/DeepLearningTutorials,haojunyu/DeepLearningTutorials,jyb002/DeepLearningTutorials,agarbuno/DeepLearningTutorials,webeng/DeepLearningTutorials,liangz0707/DeepLearningTutorials,EugenePig/DeepLearningTutorials,ericzhouh/DeepLearningTutorials,FighterLYL/DeepLearningTutorials,marchick209/DeepLearningTutorials,abergeron/DeepLearningTutorials,agarbuno/DeepLearningTutorials,jorik041/DeepLearningTutorials,yukoba/DeepLearningTutorials,mmolero/DeepLearningTutorials,SYSUNLP/DeepLearningTutorials,AveRapina/DeepLearningTutorials,pombredanne/DeepLearningTutorials,sha8e/DeepLearningTutorials,linan7788626/DeepLearningTutorials,webeng/DeepLearningTutorials,shijiaxing/DeepLearningTutorials,shijiaxing/DeepLearningTutorials