I added some stuff - testing out to see what happens when I request a pull

I added some stuff

- a diagnostics directory with imax.py - for imax camera, LOS_diagnostics.py - for coordinate transformations of line of sight diagnostics, tomography.py - for dealing with tomographic inversions of LOS diagnostics

- also made a h1model directory which will have classes that allows H1 and field coils to be plotted using mayavi

note interferometer.py and tomography.py are both heavily under construction - I just wanted to test something.