Adapting @adriaan's deck for flatMap.

 - Spruce up the CSS
   - Pick some typography, pallette from typesafe.com
   - cleaner output from the web-REPL.
 - Original content.
More content, cleaner design.
MOAR content.
The slides are served with replhtml, now.
Merge branch 'master' of git://github.com/retronym/talks

Conflicts:
	scala-2.10/css/scala-2.10.css
	scala-2.10/slides.md
Macros talk.

Requires https://github.com/adriaanm/replhtml/tree/decouple