class Tryouts

def self.inherited(klass)

NOTE: this is a standalone DSL-syntax method.

to +@@instances+.
of Tryouts, sets group to the name of the new class, and adds the instance
Called when a new class inherits from Tryouts. This creates a new instance 
def self.inherited(klass)
  to = @@instances[ klass ]
  to ||= Tryouts.new
  to.paths << __FILE__
  to.group = klass
  @@instances[to.group] = to
end