11/7/2014 update to descriptors.md
Merge branch 'gh-pages' of https://github.com/HHS/meshrdf into gh-pages
Merge branch 'gh-pages' of https://github.com/HHS/meshrdf into gh-pages
11/10/2014 SPE:  update to classes.md file
Merge branch 'gh-pages' of https://github.com/HHS/meshrdf into gh-pages