C++ testing

Made a toplevel directory for C++ and C++ tests

Change-Id: I4bc2074a7036ec7fe79568b411637a5bee9eb5b3

Added the C++ testing framework and one test

Change-Id: I1e80a1e16b251a49666820a9d4c8caa025da9785

wpilibc/wpilibC++/lib/Buttons/DigitalIOButton.cpp

@@ -0,0 +1,20 @@
+/*----------------------------------------------------------------------------*/
+/* Copyright (c) FIRST 2011. All Rights Reserved.							  */
+/* Open Source Software - may be modified and shared by FRC teams. The code   */
+/* must be accompanied by the FIRST BSD license file in $(WIND_BASE)/WPILib.  */
+/*----------------------------------------------------------------------------*/
+
+#include "Buttons/DigitalIOButton.h"
+#include "DriverStation.h"
+
+const bool DigitalIOButton::kActiveState = false;
+
+DigitalIOButton::DigitalIOButton(int port) :
+	m_port(port)
+{
+}
+
+bool DigitalIOButton::Get()
+{
+	return DriverStation::GetInstance()->GetEnhancedIO().GetDigital(m_port) == kActiveState;
+}