Minor changes and tweeks to image_match

from autocnet.fileio.io_controlnetwork import to_isis, write_filelist

from autocnet.fileio.io_yaml import read_yaml

# reads in config file

def read_config(yaml_file):

    config_dict = read_yaml(yaml_file)

    return config_dict

    return config_dict

# parses command line arguments into a single args variable

# parses command line arguments into a single args list

def parse_arguments():

    parser = argparse.ArgumentParser()

    parser.add_argument('-i', action='store', dest='input_file', default='No_Input', help='Provide the name of the file list/adjacency list')

    parser.add_argument('-o', action='store', dest='output_file', help='Provide the name of the output file.')

    parser.add_argument('input_file', action='store', help='Provide the name of the file list/adjacency list')

    parser.add_argument('output_file', action='store', help='Provide the name of the output file.')

    args = parser.parse_args()

    return args