Change default settings for future requirements + EV Fix

changed the default settings:
keyBitsize set to 2048 (befor: 1024)
Hash set to SHA256 (befor: SHA1)

readCertificateInfo return now a `san` object {dns, ip} if the csr/cert
have san entries.

readCertificateInfo returns now EV Cert informations

README.md updated