Fix problem where tests crash completely on core branch
Minimize number of tests that fail on core branch.
Merge pull request #66 from r-gaia-cs/improve-glossary-error-message

Improve message for glossary error
Merge pull request #61 from abought/test_rework

Test rework
Add Unit Test target to Makefile
Merge pull request #70 from r-gaia-cs/add-unittest-to-make

Add Unit Test target to Makefile
Fix unittest for changes on motivation.md
Merge pull request #82 from r-gaia-cs/fix-unittests

Fix unittest for changes on motivation.md
Add HTML version of LAYOUT.md of 317a7c3
Merge pull request #84 from r-gaia-cs/add-conversion-of-layout

Add HTML version of LAYOUT.md of 317a7c3
Merge pull request #88 from swcarpentry/core

Merge core to avoid warning when check gh-pages
Add links in reference back to sections
blockquote filter: fix control flow. fixes #59
blockquote filter: clearer variable names
Add information about problems with Pandoc to FAQ
Merge pull request #93 from aaren/fix-blockquote-header-attributes

Fix blockquote header attributes
Merge pull request #92 from r-gaia-cs/add-pandoc-error-to-faq

Add information about problems with Pandoc to FAQ
Fixing double 'out' typo
Merge branch 'gh-pages' of github.com:swcarpentry/lesson-template into gh-pages
make: exclude README.md from html creation.

Uses the filter-out Make text function

"Returns all whitespace-separated words in text that do not match any of
the pattern words, removing the words that do match one or more."

http://www.gnu.org/software/make/manual/make.html#Text-Functions