Update of README.md
Update to 6.0 with separate INSTRUCTOR_NUMBER table
Merge pull request #7 from dbetebenner/master

Incorporation of INSTRUCTOR_NUMBER table and update to 6.0
Updated data to 2012_2013 and version 7.0-0.0
Merge pull request #8 from dbetebenner/master

Update to 7.0-0 to 2013