Merge pull request #54 from oreillymedia/sarah

Equation support
Update README.asciidoc

Fixing typo
Adding handling for footnoteref
Merge pull request #56 from oreillymedia/jess_footnoteref

Adding handling for footnoteref
Adding handling for inline quote elements
Merge branch 'master' of github.com:oreillymedia/docbook2asciidoc into jess_quote
Merge pull request #57 from oreillymedia/jess_quote

Adding handling for inline quote elements
Adding handling for code elements; closes #58
Merge pull request #59 from oreillymedia/jess_code_handling

Adding handling for code elements; closes #58
fixed bug in variablist template that was causing all variablelists to be converted as passthroughs, instead of just those with nested lists/multiple terms