Updates for the Yocto build

Updates for the Yocto build

* Added libuuid to LIBS in the Yocto build configuration.
* Updated OICSensorBoard client for API change.
* Replaced scons script with Makefile for OICSensorBoard.
* Updated OICSensorBoardREADME to reflect the above change.

Change-Id: I8764616476b7d62d06510999535cef10c132e23d
Signed-off-by: Kishen Maloor <kishen.maloor@intel.com>
Reviewed-on: https://gerrit.iotivity.org/gerrit/1106
Tested-by: jenkins-iotivity <jenkins-iotivity@opendaylight.org>
Reviewed-by: Bernie Keany <bernie.keany@intel.com>
Reviewed-by: Erich Keane <erich.keane@intel.com>