Restructuring of the files

Facepunch.Steamworks/Utility/Epoch.cs

@@ -0,0 +1,24 @@
+using System;
+
+namespace Facepunch.Steamworks
+{
+	static internal class Epoch
+	{
+		private static readonly DateTime epoch = new DateTime( 1970, 1, 1, 0, 0, 0, DateTimeKind.Utc );
+
+		/// <summary>
+		/// Returns the current Unix Epoch
+		/// </summary>
+		public static int Current => (int)(DateTime.UtcNow.Subtract( epoch ).TotalSeconds);
+
+		/// <summary>
+		/// Convert an epoch to a datetime
+		/// </summary>
+		public static DateTime ToDateTime( decimal unixTime ) => epoch.AddSeconds( (long)unixTime );
+
+		/// <summary>
+		/// Convert a DateTime to a unix time
+		/// </summary>
+		public static uint FromDateTime( DateTime dt ) => (uint)(dt.Subtract( epoch ).TotalSeconds);
+	}
+}