Install polymer on windows ( source: http://blog.teamtreehouse.com/install-node-js-npm-windows )
- Download https://nodejs.org/en/
- open command prompt
- run "npm install -g bower"
- run "npm install -g polymer-cli"
- run "polymer init starter-kit"
- run "bower install"
- run "polymer serve"
- open web browser and type "localhost:8080"