Correcting a typo
Work on the API documentation of the GtkTreeStore implementation
Some work on the API documentation
Adding links for the GTK+ Tutorial
Work on the tests for GObject signals
Work on the implementation and API documentation of GtkComboBox
Issue #10: load libgdk-x11-3.0.0.dylib or libgdk-x11-3.0.dylib  and 
libgtk-x11-3-0.0.dylib or libgtk-x11-3.0.dylib