bug fix

    username=input('Username: ')

    passwd=input('Password: ')

    f=open('config.json','w')

    config={"username": username, "password": passwd, "testUrl": "http://www.v2ex.com/generate_204", "interval_retry_connection": "30", "interval_retry_login": "30", "interval_check_status": "60", "max_times_retry_login": "5"}

    config={"username": str(username), "password": str(passwd), "testUrl": "http://www.v2ex.com/generate_204", "interval_retry_connection": "30", "interval_retry_login": "30", "interval_check_status": "60", "max_times_retry_login": "5"}

    f.write(json.dumps(config))

    f.close()

    printWithTimeStamp('Configurations successfully saved.')