Added C++ support for solenoids.

Change-Id: If82c05196d2f4c09d148da64f6bdb0564fe5b4cc

wpilibc/wpilibC++Sim/include/simulation/SimContinuousOutput.h

@@ -0,0 +1,35 @@
+
+
+#ifndef _SIM_SPEED_CONTROLLER_H
+#define _SIM_SPEED_CONTROLLER_H
+
+#include <gazebo/transport/transport.hh>
+#include "SpeedController.h"
+
+using namespace gazebo;
+
+class SimContinuousOutput {
+private:
+	transport::PublisherPtr pub;
+	float speed;
+
+public:
+	SimContinuousOutput(std::string topic);
+
+	/**
+	 * Set the output value.
+	 *
+	 * The value is set using a range of -1.0 to 1.0, appropriately
+	 * scaling the value.
+	 *
+	 * @param value The value between -1.0 and 1.0 to set.
+	 */
+	void Set(float value);
+
+	/**
+	 * @return The most recently set value.
+	 */
+	float Get();
+};
+
+#endif