Adding 'bets#show' content

This PR adds content for the 'bets#show' view page.

This PR does NOT address styling of the page. That will be separate.

cc @Clee681 @irmiller22 LMK what you think please
@Clee681 This guy seems to have successfully applied background color to the `<body>` element in [this article](http://www.sitepoint.com/styling-the-html-and-body-elements/)...