horizontal range filter in example page

[mjamroz]

in your examples, http://codepen.io/christianacca/pen/yNWeOP instead of

    self.tableParams = new NgTableParams({}, {
      filterOptions: { filterFn: ageRangeFilter },
      dataset: simpleList,
      filterLayout: "horizontal"
    });

it should be

    self.tableParams = new NgTableParams({}, {
      filterOptions: { filterLayout: "horizontal",  filterFn: ageRangeFilter },
      dataset: simpleList,

    });

to have horizontal range filter in a header.