pandoc 1.11.1

Add new Pandoc formula, starting with version 1.11.1.

If you need to convert files from one markup format into another, pandoc
is your swiss-army knife. Pandoc can convert documents in markdown,
reStructuredText, textile, HTML, DocBook, LaTeX, or MediaWiki markup to:

* HTML formats: XHTML, HTML5, and HTML slide shows using Slidy, Slideous,
  S5, or DZSlides.
* Word processor formats: Microsoft Word docx, OpenOffice/LibreOffice ODT,
  OpenDocument XML
* Ebooks: EPUB version 2 or 3, FictionBook2
* Documentation formats: DocBook, GNU TexInfo, Groff man pages
* TeX formats: LaTeX, ConTeXt, LaTeX Beamer slides
* PDF via LaTeX
* Lightweight markup formats: Markdown, reStructuredText, AsciiDoc,
  MediaWiki markup, Emacs Org-Mode, Textile