Added LEGAL file

LEGAL

@@ -0,0 +1,10 @@
+All source code, binaries, documentation, information, and other files
+contained in this distribution are provided AS IS with NO WARRANTY OF
+ANY KIND, INCLUDING THE WARRANTY OF DESIGN, MERCHANTABILITY, AND FITNESS
+FOR A PARTICULAR PURPOSE.
+
+Nagios and the Nagios logo are trademarks, servicemarks, registered 
+trademarks or registered servicemarks owned by Nagios Enterprises, LLC.
+All other trademarks, servicemarks, registered trademarks, and 
+registered servicemarks are the property of their respective owner(s).
+