Add plain text ReadMe file


git-svn-id: https://svn.code.sf.net/p/rubycocoa/svn/trunk/src@2454 f4f36d40-9719-0410-9868-dde021a23eda
Move html version of ReadMe files under package/ dir

only .pkg installer requires these files.


git-svn-id: https://svn.code.sf.net/p/rubycocoa/svn/trunk/src@2455 f4f36d40-9719-0410-9868-dde021a23eda