[perl6/specs] aac6f7: Give the index page a facelift

[GitHub]

  Branch: refs/heads/master
  Home:   https://github.com/perl6/specs
  Commit: aac6f724f6f8582ff52188e102078480b904c243
      
https://github.com/perl6/specs/commit/aac6f724f6f8582ff52188e102078480b904c243
  Author: Anthony Parsons <flusse...@gmail.com>
  Date:   2015-05-31 (Sun, 31 May 2015)

  Changed paths:
    M html/index.html
    A html/style.css

  Log Message:
  -----------
  Give the index page a facelift

- 1 fresh stylesheet, perl6.org-flavoured
- 1 heaped tablespoon of HTML5 semantic good stuff

(Synopses are still using the original CSS for now)