Match and pretty print TiffUtil and Touch


### Changes

Output for TiffUtil:
```
> Validating file.tiff
```

In the TiffUtil output in #41, `tiffutil` is run with `-cathidpicheck`. In the manual page this option is listed as validating the resolution of the file and its `@2x ` counterpart:
```
    -cathidpicheck can be used to write an output file conforming to Apple's guidelines
     for resolution independent bitmap images, and will generate warnings if the supplied
     images do not have the recommended size relationship. For best results, ensure that
     the larger file has a filename of the form <basename>@2x.png.
```


Output for Touch:
```
> Touching file.txt
```