http://wiki.rubyonrails.org/rails/pages/HowtoUseRailsWithSubversion

Check in the application.

* Remove log, tmp

svn remove log/*
svn commit -m "removing log files"

svn propset svn:ignore "*.log" log/
svn update log/
svn commit -m "Ignoring all files in /log/ ending in .log"

svn remove tmp/*
svn propset svn:ignore "*" tmp/
svn update tmp/

* Remove database.yml 

svn propset svn:ignore "database.yml" config/
svn update config/

* You have to go back and touch log/development.log or it'll complain when you 
	% ruby script/server