fcs-fit: Truncate goodness of fit metrics
Work on readme
fcs-corr: Show argument defaults in --help
fcs-fit: Show defaults in --help
fcs-corr: Change --jiffy default to 'auto'
Revert "fcs-corr: Change --jiffy default to 'auto'"

This reverts commit 6515a1c0d7e025b8f654f5e4a199f026fd13bd46.

As it turns out, argparse attempts to parse the string as a float,
failing.
Add install.sh
readme: Some work left sitting around