updated instructions.
updated instructions.


Former-commit-id: ca5ab0f2f31269f9a4b42090b982ebaa7c2c0bf0
danielhers/dynet,danielhers/dynet,shuheik/dynet,xunzhang/dynet,clab/cnn,danielhers/dynet,xunzhang/dynet,shuheik/dynet,clab/dynet,clab/dynet,chunyang-wen/dynet,danielhers/dynet,xunzhang/dynet,shuheik/dynet,danielhers/dynet,shuheik/dynet,clab/cnn,shuheik/dynet,clab/dynet,chunyang-wen/dynet,shuheik/dynet,clab/dynet,clab/dynet,clab/dynet,xunzhang/dynet,chunyang-wen/dynet,clab/dynet,danielhers/dynet,shuheik/dynet,clab/cnn,danielhers/dynet,chunyang-wen/dynet