added conversion helpers for matlab

added examples for using the python wrappers in matlab

python/matlab/example1.m

@@ -0,0 +1,18 @@
+%% Launch the external viewer
+launch_viewer;
+
+%% Load a mesh in OFF format
+V = py.igl.eigen.MatrixXd();
+F = py.igl.eigen.MatrixXi();
+py.igl.readOFF('../tutorial/shared/beetle.off', V, F);
+
+%% Scale the x coordinate in matlab
+V = p2m(V);
+V(:,1) = V(:,1) * 2;
+V = m2p(V);
+
+%% Plot the mesh
+viewer = py.tcpviewer_single.TCPViewer();
+viewer.data.set_mesh(V, F);
+viewer.launch();
+