SGF-339 - Change all VMWare-based links in the SDG Reference Guide to Pivotal-based links.
(cherry picked from commit 9af336af3287abe4457cd47743a5b9a32d5067c2)

Signed-off-by: John Blum <jblum@pivotal.io>
SGF-340 - Change a SpringSource-based links in the SDG Reference Guide to Spring.io-based links.
(cherry picked from commit f2b03a26d0c28aff227a8a4d5287dff7bf0b663e)

Signed-off-by: John Blum <jblum@pivotal.io>