Correct HOMEPAGE and add URL to DESCR for net/py-siphon

I got a note from Stefan Wollny mentioning that net/py-siphon
had an incorrect link for HOMEPAGE and that it should point at
https://unidata.github.io/siphon/. He also asked why no link was
provided to the THREDDS data server site in DESCR.

So here is a diff that corrects HOMEPAGE and adds that URL to DESCR.

cc Martin Reindl (maintainer)

OK?

--Kurt

Index: Makefile
===================================================================
RCS file: /cvs/ports/net/py-siphon/Makefile,v
retrieving revision 1.1.1.1
diff -u -p -r1.1.1.1 Makefile
--- Makefile 1 May 2019 04:04:03 -0000 1.1.1.1
+++ Makefile 2 May 2019 13:00:37 -0000
@@ -6,8 +6,9 @@ MODPY_EGG_VERSION= 0.8.0
DISTNAME= siphon-${MODPY_EGG_VERSION}
PKGNAME= py-${DISTNAME}
CATEGORIES= net
+REVISION= 0

-HOMEPAGE= http://unidata.github.io/cftime/
+HOMEPAGE= https://unidata.github.io/siphon/

MAINTAINER= Martin Reindl <martin@catai.org>

Index: pkg/DESCR
===================================================================
RCS file: /cvs/ports/net/py-siphon/pkg/DESCR,v
retrieving revision 1.1.1.1
diff -u -p -r1.1.1.1 DESCR
--- pkg/DESCR 1 May 2019 04:04:03 -0000 1.1.1.1
+++ pkg/DESCR 2 May 2019 13:00:37 -0000
@@ -1,4 +1,5 @@
Siphon is a collection of Python utilities for downloading data
from remote data services. Much of Siphon's current functionality
-focuses on access to data hosted on a THREDDS Data Server. It also
-provides clients to a variety of simple web services.
+focuses on access to data hosted on a THREDDS Data Server
+(https://www.unidata.ucar.edu/software/thredds/currents/tds/). It
+also provides clients to a variety of simple web services.