revises commit from pull request 1409

railties/lib/rails/generators/rails/app/templates/app/assets/javascripts/application.js.tt

-// This is a manifest file that'll be compiled into application.js and include all the files listed below.
-// Add new JavaScript/Coffee code in separate files in; this directory, lib/assets/javascripts, or vendor/assets/javascripts
-// and they'll be included in the compiled file accessible from http://example.com/assets/application.js
+// This is a manifest file that'll be compiled into application.js, which will include all the files
+// listed below.
+//
+// Any JavaScript/Coffee file within this directory, lib/assets/javascripts, vendor/assets/javascripts,
+// or vendor/assets/javascripts of plugins, if any, can be referenced here using a relative path.
+//
 // It's not advisable to add code directly here, but if you do, it'll appear at the bottom of the
 // the compiled file.
 //
-// WARNING: DO NOT LEAVE ANY BLANK LINES BETWEEN REQUIRES BELOW
+// WARNING: THE FIRST BLANK LINE MARKS THE END OF WHAT'S TO BE PROCESSED, ANY BLANK LINE SHOULD
+// GO AFTER THE REQUIRES BELOW.
 //
 <% unless options[:skip_javascript] -%>
 //= require <%= options[:javascript] %>