Add basic support for Literate Programming (#1370)

docs/modules/literate-programming.md

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+# Prelude Literate Programming
+
+Prelude's `prelude-literate-programming` module enables some
+additional functionality for `org-mode` - the parent mode the native
+markdown language of Emacs.
+
+It also enables viewing and interaction of Python Notebooks within Emacs.
+
+Here are some features it provides:
+
+* syntax highlighting of code blocks in Emacs Orgmode
+* executing code blocks and printing their output in the org file
+* viewing python notebooks within Emacs
+* Using Emacs to interact with python notebooks and other remote compute engines
+
+It makes an attempt to enable [literate programming](http://www.literateprogramming.com/knuthweb.pdf)
+from within emacs