Updated .gitignore

Signed-off-by: Jai Govindani <jai@monstermedia.co.th>
Added support for 'scale' to create larger QR code images

Signed-off-by: Jai Govindani <jai@monstermedia.co.th>
Added support for 'scale' to create larger QR code images

Signed-off-by: Jai Govindani <jai@monstermedia.co.th>
Merge branch 'scalable-image' of https://github.com/zodio/ObjQREncoder into scalable-image