Added conversion info to obj type.

src/docs/asciidoc/jme3/features.adoc

@@ -115,7 +115,11 @@ Converting to j3o:
 
 l|.OBJ, .MTL
 a|3D model
-a|Wavefront
+a|Wavefront +
+Converting to j3o:
+
+* <<sdk/model_loader_and_viewer#,SDK convert>>
+* link:{link-javadoc}/com/jme3/export/binary/BinaryExporter.html[BinaryExporter]
 
 l|.xbuf
 a|3D model