Added some xml-comments

Devices/Generic/Enums/UpdateMode.cs

@@ -1,9 +1,24 @@
 namespace CUE.NET.Devices.Generic.Enums
 {
+    /// <summary>
+    /// Contains list of available update modes.
+    /// </summary>
     public enum UpdateMode
     {
+        /// <summary>
+        /// The device will not perform automatic updates. Updates will only occur if <see cref="CUE.NET.Devices.ICueDevice.Update" /> is called.
+        /// </summary>
         Manual,
+
+        /// <summary>
+        /// The device will perform automatic updates at the rate set in <see cref="CUE.NET.Devices.ICueDevice.UpdateFrequency" />
+        /// as long as an <see cref="CUE.NET.Devices.Keyboard.Effects.IEffect" /> is attached.
+        /// </summary>
         AutoOnEffect,
+
+        /// <summary>
+        /// The device will perform automatic updates at the rate set in <see cref="CUE.NET.Devices.ICueDevice.UpdateFrequency" />.
+        /// </summary>
         Continuous
     }
 }