Add Otel Java links to readme. Update CI badge. (#339)

* Add Otel Java to readme

* Switch out travis ci badge with github workflow

* Update README.md

Co-authored-by: Nathaniel Ruiz Nowell <enruizno@uwaterloo.ca>

* Update readme

Co-authored-by: Nathaniel Ruiz Nowell <enruizno@uwaterloo.ca>

README.md

@@ -1,4 +1,10 @@
-[![Build Status](https://travis-ci.org/aws/aws-xray-sdk-java.svg?branch=master)](https://travis-ci.org/aws/aws-xray-sdk-java)
+![Build Status](https://github.com/aws/aws-xray-sdk-java/actions/workflows/master-build.yml/badge.svg)
+
+### :mega: OpenTelemetry Java with AWS X-Ray
+
+AWS X-Ray recommends using AWS Distro for OpenTelemetry (ADOT) to instrument your application due to its wider range of features and instrumentations. See [Working with Java](https://docs.aws.amazon.com/xray/latest/devguide/xray-java.html) for more help with choosing between ADOT and X-Ray SDK.
+
+If you want additional features when tracing your Java applications, please [open an issue on the OpenTelemetry Java Instrumentation repository](https://github.com/open-telemetry/opentelemetry-java-instrumentation/issues/new?labels=enhancement&template=feature_request.md&title=X-Ray%20Compatible%20Feature%20Request).
 
 # AWS X-Ray SDK for Java