renamed io to messaging_io. 100% coverage on the io class

lib/hydra/messaging_io.rb

@@ -38,10 +38,6 @@ module Hydra #:nodoc:
     # because the string is not a message.
     class UnprocessableMessage < RuntimeError
       attr_accessor :message
-      # Allow a custom message for the exception.
-      def initialize(message = "Message expected")
-        @message = message    
-      end
     end
   end
 end

lib/hydra/pipe.rb

@@ -1,4 +1,4 @@
-require 'hydra/io'
+require 'hydra/messaging_io'
 module Hydra #:nodoc:
   # Read and write between two processes via pipes. For example:
   #   @pipe = Hydra::Pipe.new

lib/hydra/ssh.rb

@@ -1,5 +1,5 @@
 require 'open3'
-require 'hydra/io'
+require 'hydra/messaging_io'
 module Hydra #:nodoc:
   # Read and write with an ssh connection. For example:
   #   @ssh = Hydra::SSH.new(