ruby-style.el: add an instruction to load

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git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@53967 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

misc/ruby-style.el

@@ -7,6 +7,8 @@
 ;;;  $Author$
 ;;;  created at: Thu Apr 26 13:54:01 JST 2007
 ;;;
+;;; Put this file under a directory contained in ``load-path'', and
+;;; then load it.
 ;;; To switch to the "ruby" style automatically if it looks like a
 ;;; source file of ruby, add ruby-style-c-mode to c-mode-hook:
 ;;;