Update PHP Server SDK docs to have a relay mode by default.
Update PHP Server SDK docs to have a relay mode by default.
jayendra03/OpenTok-PHP-SDK,aoberoi/Opentok-PHP-SDK,jayendra03/OpenTok-PHP-SDK,aoberoi/Opentok-PHP-SDK,aoberoi/Opentok-PHP-SDK,jayendra03/OpenTok-PHP-SDK,jayendra03/OpenTok-PHP-SDK,opentok/OpenTok-PHP-SDK