clean up included documentation

BUGS

README.md

doc/INSTALL.md

doc/LICENSE

doc/RAILS_README

doc/deployment/THEMING.md

doc/deployment/apache.txt

doc/deployment/configuration

doc/deployment/deploy.txt

doc/development/debugging.md

doc/development/development-notes.md

doc/development/error-handling.md

doc/development/multilingual.md

doc/old/core_models

doc/old/database_performance

doc/old/ie_quirks

doc/old/mod-development.txt

doc/old/routes.txt

doc/old/writing_controllers

doc/old/writing_pages