Added basepath arg to image_match.

    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('-p', action='store', dest='basepath', help='Provide the path to the image files')

    args = parser.parse_args()

    return args

def match_images(args):

    # Matches the images in the input file using various candidate graph methods

    # produces two files usable in isis

    try:

        cg = CandidateGraph.from_adjacency(args.input_file, basepath='/home/acpaquette/Desktop/')

        cg = CandidateGraph.from_adjacency(args.input_file, basepath=args.basepath)

    except:

        cg = CandidateGraph.from_filelist(args.input_file)