Improved Command-based examples (#906)

Robot.cpp has been split into header-source pairs and the Command-based
examples now define an example subsystem in the Robot class.

wpilibcExamples/src/main/cpp/templates/timed/Robot.h

@@ -0,0 +1,29 @@
+/*----------------------------------------------------------------------------*/
+/* Copyright (c) 2017-2018 FIRST. 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 the root directory of */
+/* the project.                                                               */
+/*----------------------------------------------------------------------------*/
+
+#pragma once
+
+#include <string>
+
+#include <SmartDashboard/SendableChooser.h>
+#include <TimedRobot.h>
+
+class Robot : public frc::TimedRobot {
+public:
+	void RobotInit() override;
+	void AutonomousInit() override;
+	void AutonomousPeriodic() override;
+	void TeleopInit() override;
+	void TeleopPeriodic() override;
+	void TestPeriodic() override;
+
+private:
+	frc::SendableChooser<std::string> m_chooser;
+	const std::string kAutoNameDefault = "Default";
+	const std::string kAutoNameCustom = "My Auto";
+	std::string m_autoSelected;
+};