Added help header.

src/run_unitary_tests.m

 function [report, time] = run_unitary_tests(listoffiles)
-    
-% Copyright (C) 2013 Dynare Team
+
+% Runs unitary tests defined in a collection of files.
+%
+% INPUTS 
+%  - listoffiles [cell], The list of m files (with path) where the unitary tests are written.
+%                This cell, with n elements, is the output of get_directory_description routine.
+%
+% OUTPUTS 
+%  - report      [cell], Results of the unitary tests (n rows and 5 columns). Each row stores
+%                the second output argument of mtest routine (info).
+%  - time        [double], Current date and time as date vector.
+%
+%
+% See also get_directory_description, mtest
+
+% Copyright (C) 2013-2014 Dynare Team
 %
 % This file is part of Dynare.
 %