Fix build badge

We have the GH actions CI working now
diff --git a/README.md b/README.md
index e28e2e8..ed84d6e 100644
--- a/README.md
+++ b/README.md
@@ -6,7 +6,7 @@
 state machine that does its best to be as quick and efficient as
 possible while not placing any constraints on the parsed JSON.
 
-[![Build Status](https://travis-ci.org/davisp/jiffy.svg?branch=master)](https://travis-ci.org/davisp/jiffy)
+![Build Status](https://github.com/davisp/jiffy/actions/workflows/ci.yml/badge.svg)
 
 Usage
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