added slack notifications to travis config
added slack notifications to travis config

rogerapras/SimpleLance,dnacreative/SimpleLance,SimpleLance/SimpleLance,rogerapras/SimpleLance,SimpleLance/SimpleLance,rogerapras/SimpleLance,SimpleLance/SimpleLance,rogerapras/SimpleLance,SimpleLance/SimpleLance,dnacreative/SimpleLance,dnacreative/SimpleLance,dnacreative/SimpleLance