Updated simple_ra

I’ve updated simple_ra on CGRAN.

It now includes scripts for post-processing data, and does a bit more
auto-configuration for sample rates, frequency limits, and
gain-limits, based on a little external helper application called
‘uhd_params_block’. Even if you aren’t interested in Radio Astronomy,
the way the
startup scripts interact with the flow-graphs might be useful
guidance for other people invoking flow-graphs from shell scripts.

Marcus L.
Principal Investigator
Shirleys Bay Radio Astronomy Consortium