Improve the logging of code coverage info

Author: JamesMessinger

.travis.yml

@@ -33,7 +33,7 @@ script: npm run lint && npm run test:typescript && npm run coverage
 
 after_success:
   # concatenate all code-coverage data into a single file
-  - ls -R1 coverage/*/lcov.info
+  - ls -Rlh coverage/*/lcov.info
   - cat coverage/*/lcov.info > ./coverage/lcov.info
 
   # send code-coverage data to Codacy