Addition of google-sheets web component

@mmeiers @swbloom @stulees Here is the pull request incorporating the google-sheets web component into the Events template.

*New files added*
- bower_components
- bower.json
- script.js

*Files changed*
- events.html - removed all reference to static slide information and replaced with google-sheets web component and template tags. Included links to webcomponent.js, google-sheets.html, polymer.html and script.js files 

- events.css - various style changes to incorporate google-sheets data. Targeted data with selectors to manipulate whole slides to remain consistent with the css keyframes animation.

Will update the readme once all changes have been checked/confirmed.

A temp working version should be viewable here: http://www.cameroncodes.com/webcomponents/events.html

Thanks!