place article name in the beginning of guides page title
improve StrongParameters documentation [ci skip]
Merge pull request #8773 from goshakkk/guides-page-titles

Place article name in the beginning of guides page title
Merge pull request #8803 from frodsan/sp_docs

Improve StrongParameters documentation [ci skip]
Fix named scope + class method example

Closes #8804 [ci skip]
let the rails gem ship with the README

The doc:rails application rake task needs this README.
doc/README_FOR_APP is no longer generated
new README generated for new apps