LSNBLDR-236; update README


git-svn-id: https://source.sakaiproject.org/svn/lessonbuilder/trunk@125544 66ffb92e-73f9-0310-93c1-f5514f145a0a
LSNBLDR-224; turn on peer evalution


git-svn-id: https://source.sakaiproject.org/svn/lessonbuilder/trunk@125545 66ffb92e-73f9-0310-93c1-f5514f145a0a