Correct details of setup.py
move exif2timestream and remove resizing crap
update travis config with new dir structure
remove resizing dependencies from e2t setup.py
small improvements and fixes to exif2timestream
bump version in setup.py
update readme
bump exif2timestream version to rc1
fix skipping of images

- implement proper try/except blocks around calls that can fail
- skip existing images, don't overwrite
- sort images to process to make order stable (sometimes still not
	  deterministic though)
- add tests
minor code cleanup
woo, non-determinism. fix failing multithread test
update gitignore to exclude logging files
add tests for camera validation when use = 0

If the camera should be skipped, it need not be valid.
fix bug with enforcing validity of unused camers
add comments to test of unused cameras
make timestreams output/archive to outdir/EXPT/TS

Put an extra directory under the archive/output directories. This makes
life easier, as whole experiments can be shifted/worked with easily.
(and Tim won't lose any hair).
add logging, and misc small bug fixes
misc commenting, docstringing and bugfixing
bugfix: stop generate csv always occuring
fix misc bugs in new features since 0.1rc2