FEWD-3318 link fix + 3.0 links
FEWD-3318 link fix + 3.0 links

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improved doc & community links
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FEWD-3318 link fix + 3.0 links

couchbase.com/communities/nodejs  --> couchbase.com/community

Change-Id: Ic3d8ccc29026a702b24702964ab7d133cefbd9f6
Reviewed-on: http://review.couchbase.org/123166
Reviewed-by: Brett Lawson <c8c4369773d7d7226e031f0c4af62e3f38a08510@gmail.com>
Tested-by: Brett Lawson <c8c4369773d7d7226e031f0c4af62e3f38a08510@gmail.com>

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