Merge pull request #3 from yshl/certdata2pem

Error of certdata2pem.rb in doc-jp/README.SSL

doc-jp/README.SSL

@@ -85,6 +85,9 @@ SSL
 #
 # certdata2pem.rb
 
+if RUBY_VERSION>="1.9"
+  Encoding.default_external="UTF-8"
+end
 while line = $stdin.gets
   next if line =~ /^#/
   next if line =~ /^\s*$/