docs(readme): add code badges (CORE-000) (#17)

* docs(readme): add code badges (CORE-000)

* docs(readme): add codecov and cirecleci badges

Author: effervescentia

README.md

@@ -1,3 +1,7 @@
-# middleware
+# backend-utils
+
+[![circle ci](https://circleci.com/gh/voiceflow/backend-utils/tree/master.svg?style=shield&circle-token=17c5f9a339321f00bc2ecea2472666fe39fbcee2)](https://circleci.com/gh/voiceflow/backend-utils/tree/master)
+[![codecov](https://codecov.io/gh/voiceflow/backend-utils/branch/master/graph/badge.svg?token=HAZ701L2QY)](https://codecov.io/gh/voiceflow/backend-utils)
+[![sonar quality gate](https://sonarcloud.io/api/project_badges/measure?project=voiceflow_backend-utils&metric=alert_status)](https://sonarcloud.io/dashboard?id=voiceflow_backend-utils)
 
 ## express middleware for route wrapping