Minimal list of files to create an interface.

More information about the application design can be found here:
   www.mantidproject.org/Architecture_of_Reduction_Application_for_HFIR_SANS

reduction_gui/instruments/
   example_interface.py
   instrument_factory.py   <----- register your interface here
   
reduction_gui/reduction/
   example_state.py 
   
reduction_gui/widgets/
   example_widget.py
   
ui/
   example.ui
   ui_example.iu   <----- generate by pyuic4
   
Generating python code from the .ui file
   pyuic4 -o ui/ui_example.py ui/example.ui