Added more info to the README

README.md

@@ -16,3 +16,5 @@ A simple Forth interpreter in Ruby (1.9).
     2 sq
     .
     4
+
+This is based on a sweet hack by [Russ Olsen](http://jroller.com/rolsen/) presented to me in a [GoodReads comment](http://www.goodreads.com/review/show/120660311).

src/rforth.rb

@@ -94,9 +94,7 @@ class RForth
     end
 
     @dictionary.word(name) do
-      blocks.each do |b|
+      blocks.each {|b| b.call}
-        b.call
-      end
     end
   end