Add nyc, update circleci pipeline and fix e2e test run

Author: deleonn

.circleci/config.yml

@@ -13,22 +13,15 @@ jobs:
         auth:
           username: $DOCKERHUB_USERNAME
           password: $DOCKERHUB_PASSWORD
-      - image: mongo:4.2
-        auth:
-          username: $DOCKERHUB_USERNAME
-          password: $DOCKERHUB_PASSWORD
     steps:
       - browser-tools/install-browser-tools
       - checkout
       - run:
           name: NPM install
           command: npm ci
       - run:
-          name: Run linting
-          command: npm run lint
-      - run:
-          name: Run tests with browser
-          command: npm run test:browser
+          name: Run tests with coverage
+          command: npm run test:ci
       - store_artifacts:
           path: coverage
   publish-npm:

.gitignore

@@ -11,4 +11,5 @@ node_modules
 lib/
 /.idea
 *.tgz
-.vscode
+.vscode
+tmp

README.md

@@ -1,7 +1,7 @@
 # particle-api-js
 JS Library for the Particle Cloud API for Node.js and the browser
 
-[![Build Status](https://circleci.com/gh/particle-iot/particle-api-js.svg?style=shield&circle-token=e41d6332462903a16e5e172ae045909281c60736)](https://app.circleci.com/pipelines/github/particle-iot/particle-api-js)
+[![Build Status](https://circleci.com/gh/particle-iot/particle-api-js.svg?style=shield)](https://app.circleci.com/pipelines/github/particle-iot/particle-api-js)
 
 ## Installation