Preliminary implementation of JoystickDevice.

Source/OpenTK/Input/JoystickDevice.cs

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+using System;
+using System.Collections.Generic;
+using System.Text;
+using OpenTK.Math;
+
+namespace OpenTK.Input
+{
+    /// <summary>
+    /// Represents a joystick device and provides methods to query its state.
+    /// </summary>
+    public class JoystickDevice : IInputDevice
+    {
+        string description;
+        Vector2[] axis_position;
+
+        #region --- IInputDevice Members ---
+
+        /// <summary>
+        /// Gets a string describing this JoystickDevice.
+        /// </summary>
+        public string Description
+        {
+            get { return description; }
+            internal set { description = value; }
+        }
+
+        /// <summary>
+        /// Gets a value indicating the InputDeviceType of this InputDevice. 
+        /// </summary>
+        public InputDeviceType DeviceType
+        {
+            get { return InputDeviceType.HID; }
+        }
+
+        #endregion
+
+        #region --- Public Methods ---
+
+        //public Vector2 Axis1
+        //{
+        //    get { return axis_position.Clone(); }
+        //    internal set { 
+        //}
+
+        #endregion
+    }
+}