help useage update

remember.py

@@ -260,7 +260,7 @@ def main():
     
 def print_usage():
     print("\nUsage:")
-    print("\n Add entry: rem add \"ls -la\" -p \"List all files with details\" -k \"linux,files,list\"")
+    print("\n Add entry: rem add -c \"ls -la\" -p \"List all files with details\" -k \"linux,files,list\"")
     print("\t -p = purpose, -k = keywords")
     print("\n List entries: rem list")
     print("\n Search: rem search -t KEYWORD or COMMAND or PURPOSE")