var portal: BBPortalProtocol = BBPortal(withGroupIdentifier: "your.group.identifier.goes.here", andPortalID: "id.for.this.portal")

// Send data
portal.send(data: ["key": "What ever data you want"]) { 
    (error) in

    if let anError = error {
        print("Send failed with error: ", anError)
    }
}

// Receive data
portal.onDataAvailable = {
    (data) in

    guard let dict = data as? [String: Any?] else {
        return
    }

    print("I received some data through the portal: ", dict)
}