Make pytesser compatible with Pillow

```
The line "import Image" at line 6 pytesser.py expects that /PIL/ is added to 
the path. However, Pillow does not have the PIL.pth file that ensures you can 
import modules like that. As such, the import line needs to be changed to "from 
PIL import Image".
```

Original issue reported on code.google.com by `sim...@rangespan.com` on 31 Mar 2014 at 12:07
