readme update, more info added to todo list for installs lingering issues

git-svn-id: svn+ssh://civmxsrv2.duhs.duke.edu/Users/civmsvn/svn/repos/workstation_code/trunk@2181 d41079a3-eaa1-4f09-8506-b324c47726bb
Merge branch 'master' of github.com:jamesjcook/workstation_code
merge svn issue1!