Small changes to help message

bin/cjarchiver

@@ -187,10 +187,10 @@ def store(archivefile,groupname,username):
 #*************************************************************
 #Parsing arguments and options from command line
 #*************************************************************
-usage = "python %(prog)s [options] directory"
+usage = "%(prog)s [options] directory"
 description = '''
 description:
-cjarchive.py archives a folder and all its contents in a compressed file 
+cjarchive archives a folder and all its contents in a compressed file 
 with the name USER_YYYYMMDDHHMMSS_DIRECTORY.tar.bz2. Requires that the 
 target folder contains a metadata file named ARCHIVE_METADATA.json in 
 JSON format (see below an example).