Update VASCO provider info

I received an email from a worker at VASCO saying the following:

> There is a little change I would like to make. VASCO as vendor of 2FA supports also phone and
> mail. Today there is also Color QR code and out of band authentication. There is also
> Authentication and signature. Signature is especially interesting to avoid the MIM.
> 
> Could you update the site and add for VASCO also Phone and mail.