added warning if the file given to write-htcondor-job-spec.py is not in fasta format.
added warning if the file given to write-htcondor-job-spec.py is not in fasta format.

terrycojones/dark-matter,acorg/dark-matter,bamueh/dark-matter,terrycojones/dark-matter,acorg/dark-matter,bamueh/dark-matter