Added doc/README_FOR_APP so RDoc can be built. (#1769)

git-svn-id: http://redmine.rubyforge.org/svn/trunk@1732 e93f8b46-1217-0410-a6f0-8f06a7374b81

doc/README_FOR_APP

+= Redmine
+
+Redmine is a flexible project management web application written using Ruby on Rails framework.
+
+More details can be found at http://www.redmine.org