Update INSTALL.md
Update INSTALL.md
dhgarrette/cnn,Abasyoni/dynet,cherryc/dynet,Abasyoni/dynet,mitchellstern/dynet,cherryc/dynet,Peilun-Li/dynet,kamigaito/cnn,dhgarrette/cnn,Peilun-Li/dynet,cherryc/dynet,Abasyoni/dynet,Peilun-Li/dynet,dhgarrette/cnn,kamigaito/cnn,mitchellstern/dynet