docs(yarn): removed all references of yarn

README.md

@@ -8,32 +8,43 @@ projects. This project is not maintained and only serves as an example. If you'r
 in learning more about web components, check out [Open WC](https://open-wc.org)
 
 ## How to Set up Your Development Environment
-
-`npm i`
-`npm start`
+```bash
+npm i
+npm start
+```
 
 ## Testing
 
-        `yarn test`
+```bash
+npm test
+```
 
 #### JavaScript Unit Testing
 
-Polaris uses [Web Component Tester](https://github.com/Polymer/web-component-tester) as its JavaScript testing framework.
+Polaris uses [Web Component Tester](https://github.com/Polymer/tools/tree/master/packages/web-component-tester) as its JavaScript testing framework.
+
+> Install `WCT` globally
+
+```bash
+npm install -g web-component-tester
+```
 
-You can run WCT using `yarn test` or `wct` - install wct globally first with `yarn global add wct`
+You can run WCT using `npm test` or `wct`
 
 #### JavaScript Code Coverage
 
 Polaris uses [Istanbul](http://gotwarlost.github.io/istanbul/) in tracing JavaScript code coverage.
 
 How to generate code coverage:
 
-1. Run a test `yarn test`
+1. Run a test `npm test`
 
 2. View the report in your browser:
 
     open coverage/index.html
 
 ## Building for Release
 
-        `yarn build`
+```bash
+npm run build
+```

package.json

@@ -11,7 +11,6 @@
     "build": "node tasks/build.js",
     "deploy": "bin/deploy.sh",
     "lint": "eslint . --ext js,html --ignore-path .gitignore",
-    "setup": "yarn",
     "start": "node tasks/watch.js",
     "test": "wct"
   },