Added missing XML comments

Lidgren.Network/NetBuffer.Write.cs

@@ -27,12 +27,21 @@ using System.Runtime.InteropServices;
 
 namespace Lidgren.Network
 {
+	/// <summary>
+	/// Utility struct for writing Singles
+	/// </summary>
 	[StructLayout(LayoutKind.Explicit)]
 	public struct SingleUIntUnion
 	{
+		/// <summary>
+		/// Value as a 32 bit float
+		/// </summary>
 		[FieldOffset(0)]
 		public float SingleValue;
 
+		/// <summary>
+		/// Value as an unsigned 32 bit integer
+		/// </summary>
 		[FieldOffset(0)]
 		[CLSCompliant(false)]
 		public uint UIntValue;