config (circle): add coveralls script step to circleCi

Author: solkimicreb

.circleci/config.yml

@@ -12,9 +12,9 @@ jobs:
       # Specify service dependencies here if necessary
       # CircleCI maintains a library of pre-built images
       # documented at https://circleci.com/docs/2.0/circleci-images/
-      # - image: circleci/mongo:3.4.4
 
     steps:
       - checkout
       - run: npm install
       - run: npm test
+      - run: npm run coveralls