Moved traits into separate file

Just needed to organize it a little better. was starting
to get a little messy all in one file. And I have functionality
in traits 1) to play with them and 2) in case they can be
re-used with a more Sinatra-like (Rack-like really) model where
apps can be nested.
Added Parametric route handlers

In the style of Sinatra's `params` object, I've added parametric
route handlers with Sinatra-style route-matching (although more
limited, I believe).
Updated todo's in README.md