Try unix line breaks \n if windows does not give results

[muuvmuuv]

Just noticed that if a vCard uses \n for line breaks vcf returns and undefined version match error. This can happen. A workaround would be a check after the first normalize split:

https://github.com/jhermsmeier/node-vcf/blob/master/lib/vcard.js#L263

if (lines.length <= 1) {
        lines = lines[0].split(/\n/g);
      }

[jhermsmeier]

VCF specifies CRLF line endings; see #35 (comment) for a little more detail (tldr; it would break quoted printable encoding in values)