Add section about removing obsolete versions to archive. Fix some typos.
Add section about removing obsolete versions to archive.
Fix some typos.

jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion