include credits block and update github repo

README

@@ -6,6 +6,19 @@ OpenNTPD has a web site at http://www.openntpd.org/
 
 The current portable tree can be found at https://github.com/openntpd-portable
 
+Credits
+-------
+OpenBSD's native ntpd was written by Henning Brauer and Alexander Guy.
+
+Portable OpenNTPD versions 3.9 and earlier were developed by Darren Tucker,
+with contributions from Christian Weisgerber, Jason Mader and Anthony
+O.Zabelin., and was based heavily on OpenSSH portable.
+
+This new portable version is based on the LibreSSL portable framework by Brent
+Cook. It includes patches from FreeBSD, Debian and Gentoo OpenNTPD packages,
+along with with compatibility code from the OpenSSH and original OpenNTPD
+portable trees.
+
 Platform Requirements
 ---------------------
 adjtime() and settimeofday() syscalls or equivalent.

update.sh

@@ -7,7 +7,7 @@ openntpd_version=`cat VERSION`
 echo "pulling upstream openbsd source"
 if [ ! -d openbsd ]; then
 	if [ -z "$OPENNTPD_GIT" ]; then
-		git clone https://github.com/openntpd-portable/openbsd.git
+		git clone https://github.com/openntpd-portable/openntpd-openbsd.git
 	else
 		git clone $OPENNTPD_GIT/openbsd
 	fi