Added some xml-comments

Devices/Headset/CorsairHeadset.cs

@@ -3,6 +3,9 @@
 namespace CUE.NET.Devices.Headset
 {
     //TODO DarthAffe 20.09.2015: Find someone to test this
+    /// <summary>
+    /// Stub for planned headset-support.
+    /// </summary>
     public class CorsairHeadset : AbstractCueDevice
     {
         #region Properties & Fields

Devices/Headset/CorsairHeadsetDeviceInfo.cs

@@ -3,6 +3,9 @@ using CUE.NET.Native;
 
 namespace CUE.NET.Devices.Headset
 {
+    /// <summary>
+    /// Stub for planned headset-support.
+    /// </summary>
     public class CorsairHeadsetDeviceInfo : GenericDeviceInfo
     {
         internal CorsairHeadsetDeviceInfo(_CorsairDeviceInfo nativeInfo)