overwrite docs were wrong

utils/create-share.py

@@ -10,7 +10,7 @@ parser.add_argument('-p','--path', action="store", dest="path", required = True,
 parser.add_argument('-P','--public', action="store_true", dest="public", default = False)
 parser.add_argument('-u','--upload', action="store_true", dest="upload", default = False)
 parser.add_argument('-o','--overwrite', action="store_false", dest="overwrite", default = True,
-        help = "Allow file overwrites")
+        help = "Disable file overwrites")
 parser.add_argument('-d','--direct', action="store_true", dest="direct", default = False,
         help = "Allow direct file sharing (password hash included in URL)")
 parser.add_argument('--pass-plain', action="store", dest="plain", default = False)