fix(badge): add Travis CI badge

Author: KalleV

README.md

@@ -1,6 +1,6 @@
 # @labshare/lb-services-auth
 
-[![LoopBack](https://github.com/strongloop/loopback-next/raw/master/docs/site/imgs/branding/Powered-by-LoopBack-Badge-(blue)-@2x.png)](http://loopback.io/)
+[![Build Status](https://travis-ci.com/LabShare/lb-services-auth.svg?branch=master)](https://travis-ci.com/LabShare/lb-services-auth)
 
 # Install