title: Verify gpg signature in Go openpgp
body: <p>I'm playing with writing a Go program that downloads and verifies files.
  I am hoping to avoid forcing the user to install gnupg (if possible).</p>
  
  <p>Is it possible to verify a downloaded file with a gpg signature (asc file) as described <a href="https://dev.mysql.com/doc/refman/5.7/en/checking-gpg-signature.html" rel="nofollow">here</a> or <a href="http://tor.hermetix.org/verifying-signatures.html.en" rel="nofollow">here</a> using Go's openpgp lib or some other Go library?</p>
  
  <p>Any examples demonstrating how to use openpgp to verify a file with an asc signature would be appreciated.</p>