added code to web socket close
added code to web socket close

mjgaylord/SwiftDDP,siegesmund/RealmMeteor,siegesmund/SwiftDDP,infinitedg/SwiftDDP,siegesmund/SwiftDDP,siegesmund/RealmMeteor,Duckr/SwiftDDP,mjgaylord/SwiftDDP,infinitedg/SwiftDDP,Duckr/SwiftDDP