Change in template to accomodate new API of TextLoader (dotnet#72)

* Added sequential grouping of columns

* reverted the file

* changed to new API of Text Loader

* changed signature

* added params for taking additional settings

* changes to codegen params

* refactoring of templates and fixing errors

Author: srsaggam

src/mlnet/Commands/NewCommand.cs

@@ -120,7 +120,10 @@ private static void RunCodeGen(Options options, ColumnInferenceResult columnInfe
                 Columns = columns,
                 Transforms = transforms,
                 HasHeader = columnInference.HasHeader,
-                Separator = columnInference.Separators.First(),
+                Separators = columnInference.Separators,
+                AllowQuotedStrings = columnInference.AllowQuotedStrings,
+                SupportSparse = columnInference.SupportSparse,
+                TrimWhiteSpace = columnInference.TrimWhitespace,
                 Trainer = trainer,
                 TaskType = options.MlTask.ToString(),
                 ClassLabels = classLabels,