Added a drive method for the DifferentialDrive class to the interface.

Author: TimothyNguyen

src/main/java/org/usfirst/frc/team69/util/driving/ArcadeDriveParams.java

@@ -1,6 +1,7 @@
 package org.usfirst.frc.team69.util.driving;
 
 import edu.wpi.first.wpilibj.RobotDrive;
+import edu.wpi.first.wpilibj.drive.DifferentialDrive;
 
 /**
  * A class which represents arcade drive. Arcade drive uses two values: move and
@@ -48,6 +49,12 @@ public ArcadeDriveParams(double move, double rotate, boolean squareInputs) {
     public void drive(RobotDrive driveTrain, double currentGyro) {
         driveTrain.arcadeDrive(m_move, m_rotate, m_squareInputs);
     }
+    
+	@Override
+	public void drive(DifferentialDrive driveTrain, double currentGyro) {
+		// TODO Auto-generated method stub
+		driveTrain.arcadeDrive(m_move, m_rotate, m_squareInputs);
+	}
 
     /**
      * Get the move parameter
@@ -75,5 +82,4 @@ public double rotate() {
     public boolean squareInputs() {
         return m_squareInputs;
     }
-
 }

src/main/java/org/usfirst/frc/team69/util/driving/DriveParameters.java

@@ -1,6 +1,7 @@
 package org.usfirst.frc.team69.util.driving;
 
 import edu.wpi.first.wpilibj.RobotDrive;
+import edu.wpi.first.wpilibj.drive.DifferentialDrive;
 
 /**
  * The {@link DriveParameters} interface allows one to use polymorphism to
@@ -36,4 +37,5 @@ public interface DriveParameters {
      *            this right now, so just pass in 0.0 if you're not sure.
      */
     void drive(RobotDrive driveTrain, double currentGyro);
+    void drive(DifferentialDrive driveTrain, double currentGyro);
 }

src/main/java/org/usfirst/frc/team69/util/driving/TankDriveParams.java

@@ -1,6 +1,7 @@
 package org.usfirst.frc.team69.util.driving;
 
 import edu.wpi.first.wpilibj.RobotDrive;
+import edu.wpi.first.wpilibj.drive.DifferentialDrive;
 
 /**
  * A class which represents tank drive. This mode takes two inputs: left and
@@ -46,7 +47,14 @@ public TankDriveParams(double left, double right, boolean squareInputs) {
     public void drive(RobotDrive driveTrain, double currentGyro) {
         driveTrain.tankDrive(m_left, m_right, m_squareInputs);
     }
+    
+	@Override
+	public void drive(DifferentialDrive driveTrain, double currentGyro) {
+		// TODO Auto-generated method stub
+		driveTrain.tankDrive(m_left, m_right, m_squareInputs);
+	}
 
+    
     /**
      * Get the left parameter
      *