Added a new renderBase64Img method to the View helper to use the QrCodeService to render base64-encoded images
QrCodeService now makes sure the extension and size are set and uses default values otherwise
It is no longuer possible to render an image without message. It makes no sense
Updated QrCodeViewHelper to allways treat the last passed argument as the attribs argument if it's an array
Added template to be rendered by the base64Img method imn the view helper
Added renderBase64Img usage to README
Fixed autoload directory in dev env
Fixed tests
Added new tests for new features
Merge branch 'base64' into develop