Add new wall display template, javascript, and stylesheets. Closes #19

Visit this by running the bin and opening display.html

This works with the plato overview render method to write an additional
overview file to display.html. This file has a separate stylesheet and
javascript charting file. This is meant for display on a large overhead
monitor.

* Update to Morris v0.4.3 and update the uglified bundle
* Add new display.html template and plato-display.css for it
* Add new plato-display.js file to render the simple full screen view charts
* Reports directory gets some new json file as a result of runbin
* Remove CasperJS testing from `.travis.yml`
* Update build status badge path to use es-analysis