add link to travis CI
add link to travis CI

mwoytowich/MQTTKit,mobile-web-messaging/MQTTKit,nodeath/MQTTKit,nodeath/MQTTKit,JackLeeMing/MQTTKit,iosphere/MQTTKit,NormanLeeIOS/MQTTKit,iosphere/MQTTKit,mobile-web-messaging/MQTTKit,jmesnil/MQTTKit,JackLeeMing/MQTTKit,NormanLeeIOS/MQTTKit,mwoytowich/MQTTKit,cnbin/MQTTKit,nodeath/MQTTKit,JackLeeMing/MQTTKit,Movile/MQTTKit,cnbin/MQTTKit,cnbin/MQTTKit,mobile-web-messaging/MQTTKit,jmesnil/MQTTKit