Putting the slide dsl code on the main module

[PragTob]

• first attempt, seems to work
• fun fact, I just set up a new OS and forgot my IDE and was in the metro, so this has been programmed with a bare bones gedit - hope it's still ok =)
• It's kinda weird that the slides dsl works but we instance_eval the configuration - but I guess it is alright
• looks good, does it? Minimizing pollution while keeping the basic evaluation good :)

@jasonrclark review me maybe? Will probably merge tomorrow-ish, though, as I might need it for my talk :)

[jasonrclark]

That all looks good to me. Only minor quibble is SlideDSL looks a little clunky as a name to me... would just DSL or Dsl be acceptable since they're within the Wingtips module?

As far as config still doing the instance_eval, I think that actually will end up being a feature, since it makes it so we can expose configuration methods just by putting them on the Wingtips::Configuration class without making them accessible to all the slides. Super cool!

Ran like a charm for me locally too. Nice work! :rocket:

[PragTob]

Good point about it being name spaced under Wingtips! =) Will change that and merge after another test run.