removed custom event handler...

still studying multiprocssing
add example use of multiprocessing and wx

needs careful study!
deleted hdf5 file
add .h5 to gitignore
if possible, retain detector column choices
make sure folder / filenames are string, not unicode
merge .gitignore
add .h5 and MapData to .gitignore
force folder names to be strings (not unicode)
improve map2hdf5 script
resolve version conflicts
Merge branch 'master' of https://github.com/newville/xrmcollect
better passing of arguments to ImageFrame

including title for ouput file names and lasso handler
initial prototype with lasso-on-map to show XRF spectra
start XRF display window