Add three libs by myobie

The first is rep which is to build "representations." I primarily use as a
serializer and a decorator.

The second is mashed which I created to replace Hashie since the Mash in Hashie
has tons of problems because it's subclasses from Hash. The primary issue is
that all the enumerable methods are available and conflict with your keys in
surprising ways.

The third is factories which is the smallest version of something like
factory_girl that is probably possible. I use this in all my projects from
sinatra, to background workers, to rails and it seems to handle everything I
need so far.