Wire up the file entity to get the properties from the api's file object

src/TeamCitySharp/DomainEntities/File.cs

@@ -1,7 +1,16 @@
-namespace TeamCitySharp.DomainEntities
+using JsonFx.Json;
+
+namespace TeamCitySharp.DomainEntities
 {
     public class File
     {
-        public string relativefile { get; set; }
+        [JsonName("before-revision")] 
+        public string BeforeRevision { get; set; }
+        [JsonName("after-revision")] 
+        public string AfterRevision { get; set; }
+        [JsonName("relative-file")] 
+        public string RelativeFile { get; set; }
+
+        public string file { get; set; }
     }
 }