revise readme to reflect current development status
revise readme to reflect current development status

qibobo/app-autoscaler,cloudfoundry-incubator/app-autoscaler,qibobo/app-autoscaler,pradyutsarma/app-autoscaler,cloudfoundry-incubator/app-autoscaler,qibobo/app-autoscaler,cloudfoundry-incubator/app-autoscaler,pradyutsarma/app-autoscaler,cloudfoundry-incubator/app-autoscaler,pradyutsarma/app-autoscaler,pradyutsarma/app-autoscaler,qibobo/app-autoscaler