error Non-UTF-8

Hi,
i get this error after install bash script then i run python file.

```
└─$ python sqli_toolkit.py                                                                           
SyntaxError: Non-UTF-8 code starting with '\xf9' in file /home/user/SQLiToolkit/sqli_toolkit.py on line 4, but no encoding declared; see https://python.org/dev/peps/pep-0263/ for details
```
