little cleanup

code climate inspired

lib/risc.rb

@@ -5,6 +5,13 @@ class String
 end
 
 
+# The RiscMachine, is an abstract machine with registers. Think of it as an arm machine with
+# normal instruction names. It is not however an abstraction of existing hardware, but only
+# of that subset that we need.
+# See risc/Readme
+module Risc
+end
+
 require_relative "risc/padding"
 require_relative "risc/positioned"