vl_demo_gmm_2d_twist.m: fix
vl_demo_gmm_2d_twist.m: fix

richarddzh/vlfeat,erexhepa/vlfeat,hongzhili/vlfeat,mylxiaoyi/vlfeat,richarddzh/vlfeat,qubick/vlfeat,cvfish/vlfeat,vlfeat/vlfeat,CansenJIANG/vlfeat,rxl194/vlfeat,vlfeat/vlfeat,j-bo/vlfeat,vlfeat/vlfeat,WangDequan/vlfeat,mylxiaoyi/vlfeat,cvfish/vlfeat,mylxiaoyi/vlfeat,qubick/vlfeat,WangDequan/vlfeat,CansenJIANG/vlfeat,erexhepa/vlfeat,mylxiaoyi/vlfeat,WangDequan/vlfeat,erexhepa/vlfeat,WangDequan/vlfeat,hongzhili/vlfeat,richarddzh/vlfeat,mylxiaoyi/vlfeat,hongzhili/vlfeat,cvfish/vlfeat,mylxiaoyi/vlfeat,erexhepa/vlfeat,CansenJIANG/vlfeat,richarddzh/vlfeat,rxl194/vlfeat,CansenJIANG/vlfeat,rxl194/vlfeat,vlfeat/vlfeat,hongzhili/vlfeat,qubick/vlfeat,erexhepa/vlfeat,cvfish/vlfeat,rxl194/vlfeat,cvfish/vlfeat,j-bo/vlfeat,hongzhili/vlfeat,qubick/vlfeat,qubick/vlfeat,j-bo/vlfeat,vlfeat/vlfeat,qubick/vlfeat,erexhepa/vlfeat,j-bo/vlfeat,rxl194/vlfeat,cvfish/vlfeat,vlfeat/vlfeat,WangDequan/vlfeat,rxl194/vlfeat,richarddzh/vlfeat,CansenJIANG/vlfeat,hongzhili/vlfeat,richarddzh/vlfeat,CansenJIANG/vlfeat,j-bo/vlfeat,WangDequan/vlfeat