JSON encoding of ekg metrics; documentation

 Encodes ekg metrics as JSON, using the same encoding as used by the
 ekg package, thus allowing ekg metrics to be served by other HTTP
 servers than the one used by the ekg package.
 .
 This package provides the documentation for a library for the Haskell
 programming language.
 See http://www.haskell.org/ for more information on Haskell.