cleanup comments and output format

  change output format to use a single header line remove headers from cif

  add copyright statement
wrap URL in double quotes

  wrap variable in double quotes to handle odd URL characters
add 2-clause bsd license

  add license and assign copyright to Trustees of Indiana University
properly detect and handle cif failures

  - use Bash PIPESTATUS to catch cif download failures

  - rather than fail completely, complain about bad feed and move along