Removed duplicated README file

beacon-app/README.md

-This is an experimental version using node express and monk to connect to mongodb.
-It was mostly generated using [express-generator](http://expressjs.com/en/starter/generator.html)
-
-Usage:
-```
-npm install
-npm start
-```
-
-The implementation was adapted to arraymap data based on this tutorial:
-http://cwbuecheler.com/web/tutorials/2014/restful-web-app-node-express-mongodb/
-
-Instead of using monk, one can also use mongoose
-
-To make it REST, you may follow this:
-http://cwbuecheler.com/web/tutorials/2014/restful-web-app-node-express-mongodb/
-