PyUMI fails with an unreadable error

[nsyzrantsev]

Print a normal error message if not a single read has been matched with barcode pattern.

pyigmap/bin/pyumi/run.py

Lines 46 to 49 in c2285b2

	processed_fq1, processed_fq2, total_reads_count = extract_umi(fq12_chunks,
	fq1_pattern,
	fq2_pattern,
	args.find_in_reverse_complement)

if not processed_fq1.size or not processed_fq2.size:
  "Something happend wrong with parsing barcode from FASTQ..."