remove windows specific path

Matlab/example2.m

 clear all;
 dir_path = struct;
-dir_path.expdata = '.\';
+%uf dir_path.expdata = '.\';      % windows
+dir_path.expdata = '';   %'./';   % linux
 
 %parameter initializations (input comes from moire XGI calibration)
 beta_fix=0.0271; %fixed absolute angle on phase grating