Removed *.*

Removed *.*. This should make dataset import work on Linux.

Assets/Editor/VolumeRendererEditorFunctions.cs

@@ -7,7 +7,7 @@ public class VolumeRendererEditorFunctions
     [MenuItem("Volume Rendering/Load dataset")]
     static void ShowWindow()
     {
-        string file = EditorUtility.OpenFilePanel("Select a dataset to load", "DataFiles", "*.*");
+        string file = EditorUtility.OpenFilePanel("Select a dataset to load", "DataFiles", "");
         if(File.Exists(file))
         {
             DatasetImporterEditorWindow wnd = (DatasetImporterEditorWindow)EditorWindow.GetWindow(typeof(DatasetImporterEditorWindow));