add library to new package

edit

im working on mpu6050 package, i have a library which is work well outside ROS, but i have a problem to make the package, i wrote a node and i added the headers an and the cpp files to include directory in my package , when i do catkin_make, the node can't see the headers , thats what i got:

/home/ahmed/catkin_ws/src/mpu6050/src/mpu6050_node.cpp:12:21: fatal error: mpu6050.h: No such file or directory
compilation terminated.
mpu6050/CMakeFiles/mpu6050_node.dir/build.make:62: recipe for target 'mpu6050/CMakeFiles/mpu6050_node.dir/src/mpu6050_node.cpp.o' failed
make[2]: *** [mpu6050/CMakeFiles/mpu6050_node.dir/src/mpu6050_node.cpp.o] Error 1
CMakeFiles/Makefile2:379: recipe for target 'mpu6050/CMakeFiles/mpu6050_node.dir/all' failed
make[1]: *** [mpu6050/CMakeFiles/mpu6050_node.dir/all] Error 2
Makefile:138: recipe for target 'all' failed
make: *** [all] Error 2

i did changes to my CMakeList.txt as questions before me but nothing happened

any ideas ?? thank u in advance.

CMakeLists.txt

cmake_minimum_required(VERSION 2.8.3)
project(mpu6050)

find_package(catkin REQUIRED COMPONENTS rosconsole roscpp rospy sensor_msgs std_msgs)

catkin_package( INCLUDE_DIRS include LIBRARIES mpu6050 CATKIN_DEPENDS rosconsole roscpp rospy sensor_msgs std_msgs )

include_directories(include ${catkin_INCLUDE_DIRS} src/mpu6050/include/mpu6050 )

add_library(mpu6050 include/${PROJECT_NAME}/mpu6050.cpp include/${PROJECT_NAME}/I2Cdev.cpp ) 

add_executable(mpu6050_node src/mpu6050/src/mpu6050_node.cpp )
add_dependencies(mpu6050_node ${${PROJECT_NAME}_EXPORTED_TARGETS} ${catkin_EXPORTED_TARGETS}) 

target_link_libraries(mpu6050_node ${catkin_LIBRARIES} )

install(TARGETS mpu6050 mpu6050_node
    ARCHIVE DESTINATION ${CATKIN_PACKAGE_LIB_DESTINATION}
    LIBRARY DESTINATION ${CATKIN_PACKAGE_LIB_DESTINATION}
    RUNTIME DESTINATION ${CATKIN_PACKAGE_BIN_DESTINATION}
)

install(DIRECTORY include/${PROJECT_NAME}/ 
    DESTINATION ${CATKIN_PACKAGE_INCLUDE_DESTINATION}
    FILES_MATCHING PATTERN "*.h"
)