Always utilize `q` option
Always utilize `q` option

Previously `q` option was only being used, if it was set to `hd1080`. Logic has
been changed to:

1. If `i` option set, use `i` value (and utilize FFmpeg download if needed)

2. Else if `q` option set, use `q` value (and utilize FFmpeg download if needed)

3. Else use first array item

Fixes #115

kkdai/youtube