Polymer mixins for TangoJS
First, make sure you have the Polymer CLI installed. Then run polymer serve to serve your element locally.
This project is dependant on the tangojs-core project which is accessible through npm. Polymer 2.0 use bower as package manager but the next version will use npm. So there is no point to move now tangojs-core to bower.
To install tangojs-core and its mtango plugin:
$ npm install tangojs
$ npm install tangojs-connector-mtango
$ polymer serve
$ polymer test
Your application is already set up to be tested via web-component-tester. Run polymer test to run your application's test suite locally.