Update support link in README.
Update support link in README.

Change-Id: I4cb83541d4602fff5a2fcf6b5bdf437cfcc2b35e
Reviewed-on: http://review.couchbase.org/66101
Reviewed-by: Mark Nunberg <dab05a0fe859c5cb93882b2a75a0d613501b07be@couchbase.com>
Tested-by: Brett Lawson <c8c4369773d7d7226e031f0c4af62e3f38a08510@gmail.com>

couchbase/couchnode,couchbase/couchnode,brett19/couchnode,brett19/couchnode,couchbase/couchnode,brett19/couchnode,couchbase/couchnode