Added license header

microsecnow.c

+/*
+Copyright (c) 2014 Unixmedia S.r.l. <info@unixmedia.it>
+Copyright (c) 2014 Franco (nextime) Lanza <franco@unixmedia.it>
+
+Domotika System Domain utils [http://trac.unixmedia.it]
+
+This file is part of DMDomain.
+
+DMDomain is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 2 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
 #include <stdlib.h>
 #include <stdio.h>
 #include <string.h>