Finished merging pull request 88 with minor formatting changes.

Author: rstam

Bson/Serialization/BsonClassMap.cs

@@ -816,17 +816,18 @@ public BsonMemberMap MapProperty(string propertyName)
             }
             return MapMember(propertyInfo);
         }
+
         /// <summary>
         /// Sets the creator for the object.
         /// </summary>
         /// <param name="creator">The creator.</param>
         /// <returns>The class map (so method calls can be chained).</returns>
         public BsonClassMap SetCreator(Func<object> creator)
         {
-            this._creator = creator;
+            _creator = creator;
             return this;
-
         }
+
         /// <summary>
         /// Sets the discriminator.
         /// </summary>
@@ -878,6 +879,7 @@ public void SetExtraElementsMember(BsonMemberMap memberMap)
 
             _extraElementsMemberMap = memberMap;
         }
+
         /// <summary>
         /// Adds a known type to the class map.
         /// </summary>
@@ -1317,8 +1319,6 @@ public BsonMemberMap GetMemberMap<TMember>(Expression<Func<TClass, TMember>> mem
             return GetMemberMap(memberName);
         }
 
-        
-
         /// <summary>
         /// Creates a member map for the extra elements field and adds it to the class map.
         /// </summary>