Release note updated

ReleaseNote.txt

+==============================================
+    Dynamixel SDK v3.4.2 (Protocol 1.0/2.0)
+==============================================
+
+- 02.16.2017
+
+* fprintf output in GrouBulkRead of C++ removed
+* MATLAB library compiler error solving
+* Makefile for build example sources in SBC added
+* build files of windows c and c++ SDK rebuilt by using renewed SDK libraries
+* example source of dxl_monitor - c and cpp ver modified #50
+
+* Solved issue : #31, #34, #36, #50
+
 ==============================================
     Dynamixel SDK v3.4.1 (Protocol 1.0/2.0)
 ==============================================