Add coveralls

circle.yml

@@ -23,6 +23,7 @@ test:
   post:
     - mkdir -p $CIRCLE_TEST_REPORTS/junit/
     - find . -type f -regex ".*/target/surefire-reports/.*xml" -exec cp {} $CIRCLE_TEST_REPORTS/junit/ \;
+    - coveralls
 general:
   artifacts:
     - "*.jar"