Fix and update find cmake.

Finddynamixel_motor_cont.cmake

 #edit the following line to add the librarie's header files
-FIND_PATH(dynamixel_motor_cont_INCLUDE_DIR dynamixel.h /usr/include/iri/dynamixel_motor_cont /usr/local/include/iri/dynamixel_motor_cont)
+FIND_PATH(dynamixel_motor_cont_INCLUDE_DIR dynamixel_motor.h dynamixel_motor_group.h dynamixel_registers.h dynamixel_motor_exceptions.h
+ /usr/include/iri/dynamixel_motor_cont /usr/local/include/iri/dynamixel_motor_cont)
 
 FIND_LIBRARY(dynamixel_motor_cont_LIBRARY
     NAMES dynamixel_motor_cont
-    PATHS /usr/lib /usr/local/lib /usr/local/lib/iri/dynamixel_motor_cont)
+    PATHS /usr/lib /usr/lib/iri/dynamixel_motor_cont /usr/local/lib /usr/local/lib/iri/dynamixel_motor_cont)
     
 SET(dynamixel_motor_cont_INCLUDE_DIRS ${dynamixel_motor_cont_INCLUDE_DIR})
 SET(dynamixel_motor_cont_LIBRARIES    ${dynamixel_motor_cont_LIBRARY})