Remove the not-up-to-date readme docs
rescue DEFAULT_STORM_CONF_FILE = File.expand_path('~/.storm/storm.yaml') so we can use redstorm in environments that don't have HOME set.
This allows for on_* to be defined by defining the corresponding instance method
directly.  Prior to this fix, doing this will result in "SystemStackError: stack
level too deep".

Example
module RedStorm
  module Examples
    class SplitSentenceBolt < DSL::Bolt
      def on_receive(tuple)
        tuple[0].split(' ').map{|w| [w]}
      end
    end
  end
end