generates BCdat object after barcode backbone identification.
prepareDatObject(dat, results_dir, label, bc_backbone, min_reads, save_it)
a BCdat object.
a tbl_df object (e.g. created by dplyr::count)
a character string which contains the path to the results directory.
a character string which serves as a label for every kind of created output file.
a character string describing the barcode design, variable positions have to be marked with the letter 'N'.
positive integer value, all extracted barcode sequences with a read count smaller than min_reads will be excluded from the results
a logical value. If TRUE, the raw data will be saved as a csv-file.