Update README.md

README.md

@@ -17,6 +17,11 @@ Documentation
 - [Markdown @ Wikipedia](http://en.wikipedia.org/wiki/Markdown)
 
 
+## Markdown Syntax Extensions
+
+- [MultiMarkdown](http://fletcherpenney.net/multimarkdown) - adds footnotes, tables, definition lists, document metadata (e.g. title, author, date, etc.) and more
+
+
 ## CommonMark
 
 _A strongly specified, highly compatible implementation of Markdown_
@@ -27,6 +32,42 @@ _A strongly specified, highly compatible implementation of Markdown_
 - [Dingus](http://spec.commonmark.org/dingus) - try CommonMark (live) in your browser
 - [Talk](http://talk.commonmark.org)
 
+
+## Markdown Libraries
+
+- [kramdown](http://kramdown.gettalong.org) - [:octocat:](https://github.com/gettalong/kramdown) - markdown library (in Ruby)
+
+
+## Markdown Tools
+
+- [Pandoc](http://pandoc.org) - [:octocat:](https://github.com/jgm/pandoc) - a universal document converter (in Haskell)
+- [Jekyll](http://jekyllrb.com) - [:octocat:](https://github.com/jekyll) - transform your plain text into static websites and blogs (in Ruby)
+- [Middleman](https://middlemanapp.com) - [:octocat:](https://github.com/middleman/middleman) - makes developing websites simple (in Ruby)
+
+
+### Markdown to Website / Blog
+
+
+
+### Markdown to Presentation / Slideshow
+
+- [Slide Show (S9)](http://slideshow-s9.github.io) - [:octocat:](https://github.com/slideshow-s9) - a free web alternative to PowerPoint and Keynote in Ruby
+    - [Templates :octocat:](https://github.com/slideshow-templates)
+
+### Markdown to Books
+
+- [Hyper Book (H9) :octocat:](https://github.com/hybook)
+    - [Templates :octocat:](https://github.com/book-templates)
+
+
+
+## "Real World" Book Examples
+
+- [Open Data Handbook, 2nd Edition](http://opendatahandbook.org) - [:octocat:](https://github.com/okfn/opendatahandbook-v2)
+- [Pro Git, 2nd Edition](http://git-scm.com/book) - [:ocotocat:](https://github.com/progit/progit2)
+- [PHP The Right Way] - [:octocat:](https://github.com/codeguy/php-the-right-way)
+
+
 ## Alternatives
 
 _More lightweight markup languages_