Upgrade CircleCI

Author: philipstanislaus

.circleci/config.yml

@@ -0,0 +1,11 @@
+version: 2
+jobs:
+  build:
+    docker:
+      - image: circleci/node:10.11.0
+    steps:
+      - checkout
+      - run: |
+          yarn run lint
+          yarn run build
+          yarn run test-and-send-cov-to-coveralls