code: function flux (path) {
    return function (done) {
      fs.createReadStream(resolve(__dirname, path))
        .pipe(docflux())
        .pipe(docflux.markdown({depth: DEPTH, indent: INDENT}))
        .pipe(concat(function (data) {
          done(null, data.toString())
        }))
    }
  }
docs: Return a docflux transformer function
  
  @param  {String} path
  Code source to read (relative path)
  
  @return {Function}
  Function for async.js