Fix wrong instructions for installation on 3.19 Kernel systems
Fix wrong instructions for installation on 3.19 Kernel systems

The referred script uses relative folder adressing and thus has to be run from a specific folder (`scripts`).
IntelRealSense/librealsense,IntelRealSense/librealsense,IntelRealSense/librealsense,IntelRealSense/librealsense,IntelRealSense/librealsense,IntelRealSense/librealsense,IntelRealSense/librealsense,IntelRealSense/librealsense,floe/librealsense,IntelRealSense/librealsense,floe/librealsense,floe/librealsense