use the latest option of easyh5

Author: fangq

savesnirf.m

@@ -33,7 +33,7 @@ function savesnirf(data, outfile,varargin)
 
 opt=varargin2struct(varargin{:});
 if(~isfield(opt,'root'))
-    opt.root='';
+    opt.rootname='';
 end
 
 if(isfield(data,'SNIRFData'))