fix UTF8 encoding

Author: jarthod

lib/bencode/core_ext/string.rb

@@ -9,7 +9,7 @@ class String
   #   "".bencode      #=> "0:"
   #
   def bencode
-    "#{length}:#{self}"
+    "#{bytesize}:#{self}"
   end
 
   #

test/encoding_test.rb

@@ -1,8 +1,10 @@
+# encoding: utf-8
 require 'environment'
 
 class EncodingTest < MiniTest::Unit::TestCase
   context "The BEncode encoder" do
     should_encode "i42e", 42
     should_encode "3:foo", "foo"
+    should_encode "5:café", "café"
   end
 end