Avoid error about moc_xxx files not found (moveit#181)

Avoid error about moc_xxx files not found.

* Added include dir option in CMakeList to avoid error on moc_xxx files generation

Author: YannickRiou

visualization/CMakeLists.txt

@@ -28,6 +28,7 @@ else()
 	endmacro()
 endif()
 
+set(CMAKE_INCLUDE_CURRENT_DIR ON)
 set(CMAKE_AUTOMOC ON)
 set(CMAKE_AUTORCC ON)
 add_definitions(-DQT_NO_KEYWORDS)