Merge pull request #35 from abought/gh-pages

Merge of new validator with tests
Add id to glossary entry

This is needed to enable users jump to glossary entries.
use pandocfilters.stringify
Updating files to move  into root directory
Merge branch 'gh-pages' into moving-source-to-root-directory
Add id4glossary.py into Makefile
Store Pandoc's filter at tools/filters
Merge pull request #44 from r-gaia-cs/add-anchor-in-glossary

Add id to glossary entry
Clearing up status of notebooks and R Markdown files
Bringing in changes to add IDs to glossary entries
Merge pull request #45 from gvwilson/moving-source-to-root-directory

Updating files to move  into root directory