config is now a singleton that processes @ARGV
updated hardcoded paths, now uses the Bio::WGS2NCBI logger
adding runner class, no need for separate yagc.pl script
no longer needed
added read_ini method, which reads a simple config file. is optionally used to configure pipeline from a file pointed at by env var WGS2NCBI
updated paths to data files, now uses runner class instead of yagc.pl