From 3ef08f74134c2edad18000065028d03de180a3d1 Mon Sep 17 00:00:00 2001
From: xenolf <xenolf@users.noreply.github.com>
Date: Sat, 17 Oct 2015 22:27:04 +0200
Subject: [PATCH] Add a comment to GetCertExpiration

---
 acme/crypto.go | 1 +
 1 file changed, 1 insertion(+)

diff --git a/acme/crypto.go b/acme/crypto.go
index fc0ff288..8be4c76a 100644
--- a/acme/crypto.go
+++ b/acme/crypto.go
@@ -34,6 +34,7 @@ func pemEncode(data interface{}) []byte {
 	return pem.EncodeToMemory(pemBlock)
 }
 
+// GetCertExpiration returns the "NotAfter" date of a DER encoded certificate.
 func GetCertExpiration(cert []byte) (time.Time, error) {
 	pCert, err := x509.ParseCertificate(cert)
 	if err != nil {