feature added: Simulate sequencing upper level function, restructuring of package modules and functions

read_sequencer_package/cli.py

 import argparse
+from modules import run_read_sequencer
 
-parser = argparse.ArgumentParser(prog= 'read_sequencer', description='Simulates Sequenceing of a FASTA file.')
-parser.add_argument('--file_path',
-                    help='path to FASTA file', action='store_const')
+parser = argparse.ArgumentParser(prog='read_sequencer',
+                                 description='Simulates sequencing of a DNA sequences specified by an FASTA file.')
+parser.add_argument('--input_file_path',
+                    help='path to FASTA file')
+parser.add_argument('--output_file_path',
+                    help='path to FASTA file')
 parser.add_argument('--read_length',
-                    help='read length for sequencing', action='store_const')
-
+                    help='read length for sequencing',
+                    type=int)
 
 args = parser.parse_args()
-print(args.file_path, args.read_length)
+
+
+def main():
+    run_read_sequencer(args.input_file_path, args.read_length, args.output_file_path)
+
+
+if __name__ == '__main__':
+    main()