fixed policy

CMakeLists.txt

-cmake_minimum_required(VERSION 2.8.3)
+cmake_minimum_required(VERSION 3.0.2)
+
+if (POLICY CMP0048)
+  cmake_policy(SET CMP0048 NEW)
+endif (POLICY CMP0048)
+
+
 project(lrs_srvs_wdb)
 
 ## Find catkin macros and libraries