update readme

Author: jaredcnance

README.md

@@ -1,6 +1,7 @@
 # JSON API .Net Core
 
 [![Build status](https://ci.appveyor.com/api/projects/status/9fvgeoxdikwkom10?svg=true)](https://ci.appveyor.com/project/jaredcnance/json-api-dotnet-core)
+[![Travis](https://img.shields.io/travis/Research-Institute/json-api-dotnet-core.svg?maxAge=3600&label=travis)](https://travis-ci.org/Research-Institute/json-api-dotnet-core)
 
 JSON API Spec Conformance: **Non Conforming**