Now saving a bunch of images with diff. exp. times

Fully implemented saving .RAW images (16bit unsigned, little endian)
with user-defined exposure time, actually exposure time varying from 0
to 2x user-defined exposure time, in 10 ms steps.
The files are saved with descriptive names, so that a sequence can
easily be generated with Fiji.
Proceeding to fully automate capture, and see if this works with all the
available APTINA boards...
`pep8`ify
Ini-file for DevWareX now acquires images nicely

When this ini-file is loaded into DevWare, the user can set an exposure
time and duration, and the script will record images for the desired
time, while making sure we keep thinks in the boudaries (i.e below 7.5
fps) and making sure that the user knows what's going on.