class Yell::Configuration

initializing an instance.
The Configuration can be used to setup Yell before

def self.load!( file ) 

def self.load!( file )
  yaml = YAML.load( ERB.new(File.read(file)).result )
  # in case we have ActiveSupport
  if defined?(ActiveSupport::HashWithIndifferentAccess)
    yaml = ActiveSupport::HashWithIndifferentAccess.new(yaml)
  end
  yaml[Yell.env] || {}
end