Ensure NewTag serializes correctly

Octokit.Tests/SimpleJsonSerializerTests.cs

@@ -63,6 +63,31 @@ namespace Octokit.Tests
 
                 Assert.Equal("{\"int\":42,\"bool\":true}", json);
             }
+
+
+            [Fact]
+            public void PerformsNewTagSerialization()
+            {
+                var tag = new NewTag()
+                {
+                    Message = "tag-message",
+                    Tag = "tag-name",
+                    Object = "tag-object",
+                    Type = TaggedType.Tree,
+                    Tagger = new Tagger
+                    {
+                        Name = "tagger-name",
+                        Email = "tagger-email",
+                        Date = new DateTime(2013, 09, 03, 14, 42, 52, DateTimeKind.Local)
+                    }
+                };
+
+                var json = new SimpleJsonSerializer().Serialize(tag);
+
+                const string expectedResult = @"{""tag"":""tag-name"",""message"":""tag-message"",""object"":""tag-object"",""type"":""tree"",""tagger"":{""name"":""tagger-name"",""email"":""tagger-email"",""date"":""2013-09-03T13:42:52Z""}}";
+
+                Assert.Equal(expectedResult, json);
+            }
         }
 
         public class TheDeserializeMethod

Octokit/Models/Request/NewTag.cs

@@ -4,8 +4,7 @@ namespace Octokit
 {
     public class NewTag
     {
-        [DataMember(Name = "tag")]
-        public string Name { get; set; }
+        public string Tag { get; set; }
         public string Message { get; set; }
         public string Object { get; set; }
         [System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Naming", "CA1721:PropertyNamesShouldNotMatchGetMethods",