Merge pull request #55 from atenhar/patch-1

Update valueFilter entry in README

Author: nicolaskruchten

README.md

@@ -182,7 +182,7 @@ indication of which layer consumes each, from the bottom up:
 | `PivotData`    | `vals` <br /> array of strings                   | `[]`                          | attribute names used as arguments to aggregator (gets passed to aggregator generating function)                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               |
 | `PivotData`    | `aggregators` <br /> object of functions         | `aggregators` from `Utilites` | dictionary of generators for aggregation functions in dropdown (see [original PivotTable.js documentation](https://github.com/nicolaskruchten/pivottable/wiki/Aggregators))                                                                                                                                                                                                                                                                                                                                                                                                                                   |
 | `PivotData`    | `aggregatorName` <br /> string                   | first key in `aggregators`    | key to `aggregators` object specifying the aggregator to use for computations                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 |
-| `PivotData`    | `valueFilter` <br /> object of arrays of strings | `{}`                          | object whose keys are attribute names and values are arrays of attribute values which denote records to exclude from computation and rendering; used to prepopulate the filter menus that appear on double-click                                                                                                                                                                                                                                                                                                                                                                                              |
+| `PivotData`    | `valueFilter` <br /> object of arrays of strings | `{}`                          | object whose keys are attribute names and values are objects of attribute value-boolean pairs which denote records to include or exclude from computation and rendering; used to prepopulate the filter menus that appear on double-click                                                                                                                                                                                                                                                                                                                                                                                              |
 | `PivotData`    | `sorters` <br /> object or function              | `{}`                          | accessed or called with an attribute name and can return a [function which can be used as an argument to `array.sort`](https://developer.mozilla.org/en/docs/Web/JavaScript/Reference/Global_Objects/Array/sort) for output purposes. If no function is returned, the default sorting mechanism is a built-in "natural sort" implementation. Useful for sorting attributes like month names, see [original PivotTable.js example 1](http://nicolas.kruchten.com/pivottable/examples/mps_agg.html) and [original PivotTable.js example 2](http://nicolas.kruchten.com/pivottable/examples/montreal_2014.html). |
 | `PivotData`    | `rowOrder` <br /> string                         | `"key_a_to_z"`                | the order in which row data is provided to the renderer, must be one of `"key_a_to_z"`, `"value_a_to_z"`, `"value_z_to_a"`, ordering by value orders by row total                                                                                                                                                                                                                                                                                                                                                                                                                                             |
 | `PivotData`    | `colOrder` <br /> string                         | `"key_a_to_z"`                | the order in which column data is provided to the renderer, must be one of `"key_a_to_z"`, `"value_a_to_z"`, `"value_z_to_a"`, ordering by value orders by column total                                                                                                                                                                                                                                                                                                                                                                                                                                       |