Proposed feature - Add signature field and signature text

[lortane]

Hi,

I'm looking for a program that can detect a signature field in the PDF and sing it. I think it'd be a good feature to add to this program. Could be adding something like --field <arg>, where arg is the name of the field.

For example,
java -jar BatchPDFSignPortable.jar -k mycertificate.pfx -p CertificatePassword -i myfile.pdf -o myfilesigned.pdf --field "Signature" --signtext "Signed by John Doe"

Unfamiliar with java otherwise id do it myself. Great job nonetheless.

Kind regards