code: function(data) {
        var that = this;
        var model = new Tabletop.Model( { data: data, 
                                          parseNumbers: this.parseNumbers,
                                          postProcess: this.postProcess,
                                          tabletop: this,
                                          prettyColumnNames: this.prettyColumnNames,
                                          onReady: function() {
                                            that.sheetReady(this);
                                          } } );
      }
docs: /*
  Parse a single list-based worksheet, turning it into a Tabletop Model
  
  Used as a callback for the list-based JSON