fixed language being mandatory on transform mapping since elasticsearch 1.5

Author: Mpdreamz

src/Tests/Nest.Tests.Integration/Core/Map/Mapping/MappingTransformTests.cs

@@ -49,6 +49,7 @@ public void MultipleTransformTest()
 				)
 				.Transform(t => t
 					.Script("ctx._source['suggest'] = ctx._source['content']")
+					.Language("groovy") //mandatory since elasticsearch 1.5
 				)
 			);
 			this.DefaultResponseAssertations(putResult);

src/Tests/Nest.Tests.Integration/Core/TermVectors/TermVectorTests.cs

@@ -100,7 +100,7 @@ public void TermVectorNonMappedFieldTest()
 		{
 			var result = Client.TermVector<ElasticsearchProject>(s => s
 				.Id("1")
-				.Fields(ep => ep.Name));
+				.Fields("blahblah"));
 
 			result.IsValid.Should().BeTrue();
 			result.TermVectors.Count().ShouldBeEquivalentTo(0);