class Hashie::Dash

def self.property(property_name, options = {})


Dash.
to be returned before a value is set on the property in a new
* :default - Specify a default value for this property,

as follows:
Defines a property on the Dash. Options are 
def self.property(property_name, options = {})
  property_name = property_name.to_sym
  (@properties ||= []) << property_name
  (@defaults ||= {})[property_name] = options.delete(:default)
  class_eval <<-RUBY
    def #{property_name}
      self[:#{property_name}]
    end
    def #{property_name}=(val)
      self[:#{property_name}] = val
    end
  RUBY
end