Added GPU file for training
Added GPU file for training


Former-commit-id: f01219eee612450e0278d0f4b856ac1cd5a39dd5
xunzhang/dynet,danielhers/dynet,chunyang-wen/dynet,danielhers/dynet,clab/dynet,danielhers/dynet,shuheik/dynet,chunyang-wen/dynet,danielhers/dynet,clab/cnn,shuheik/dynet,clab/dynet,shuheik/dynet,shuheik/dynet,shuheik/dynet,xunzhang/dynet,shuheik/dynet,danielhers/dynet,xunzhang/dynet,chunyang-wen/dynet,chunyang-wen/dynet,clab/cnn,clab/dynet,clab/dynet,danielhers/dynet,danielhers/dynet,clab/dynet,clab/dynet,clab/dynet,xunzhang/dynet,clab/cnn,shuheik/dynet