Bytes conversion issue

Running customizer on Manjaro yields the following error:

```
* Read Configuration file: /etc/customizer.conf
* Running QEMU...
  => Checking
  => Gathering information
* CUSTOMIZER: ('ISO image does not exist', "/home/yaron/Documents/UbuntuCustom/Ubuntu-b'amd64'-19.04.iso")
```

The architecture should be a string I guess.

