Added Twitter Bootstrap

@mcelaney 

Hi Brian-

I added some styling using Twitter Bootstrap - for tables, responsive design, etc.

Did some work on "new stat" page - starting to see how it would work for real-time stat collection. Maybe need some buttons to quickly change players, increment stats.

Up next...
- going to learn about authentication with Devise 
- improve stat chart for mobile viewing
- starting to think about how big picture of how to collect stats for a particular game and then save

- Darlene