bin2c: Don't assume that the default Python version is higher than 2

Author: n0toose

tools/bin2c.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 #-*- coding: utf-8 -*-
 """
     bin2c
@@ -71,4 +71,4 @@ def main():
 
 
 if __name__ == '__main__':
-    main()
+    main()