Adds version print (-v) to main script

asgal

@@ -559,6 +559,7 @@ def main():
     parser.add_argument('--debug', dest='debug', help='Add debug prints to stderr', required=False, action='store_true')
     parser.add_argument('--split-only', dest='split_only', help='Only split files per gene, do not run ASGAL', required=False, action='store_true')
     parser.add_argument('-@', '--threads', dest='threads', help='Number of threads to use for salmon mapping and parallel gene computation', required=False, default="2")
+    parser.add_argument('-v', '--version', action='version', version='ASGAL 1.1.7')
 
     args = parser.parse_args()
     eprint(f"args {args}")