Adapted to the new installation directories

Findusb_i2c_adapter.cmake

 #edit the following line to add the librarie's header files
-FIND_PATH(usb_i2c_adapter_INCLUDE_DIR usb_i2c.h usb_i2c_exceptions.h /usr/include/iri/usb_i2c_adapter /usr/local/include/iri/usb_i2c_adapter)
+FIND_PATH(usb_i2c_adapter_INCLUDE_DIR usb_i2c.h usb_i2c_exceptions.h /usr/local/include/iri/usb_i2c_adapter /usr/include/iri/usb_i2c_adapter)
 
 FIND_LIBRARY(usb_i2c_adapter_LIBRARY
     NAMES usb_i2c_adapter
-    PATHS /usr/lib /usr/lib/iri/usb_i2c_adapter /usr/local/lib /usr/local/lib/iri/usb_i2c_adapter)
+    PATHS /usr/local/lib/iri/usb_i2c_adapter /usr/lib/iri/usb_i2c_adapter)
 
 SET(usb_i2c_adapter_INCLUDE_DIRS ${usb_i2c_adapter_INCLUDE_DIR})
 SET(usb_i2c_adapter_LIBRARIES    ${usb_i2c_adapter_LIBRARY})