title: Predefined filter for linePlusBarWithFocusChart
body: <p>I'm trying to use linePlusBarWithFocusChart (<a href="http://krispo.github.io/angular-nvd3/#/linePlusBarWithFocusChart" rel="nofollow">angular-nvd3</a>) in my application but i faced with the following problem - I cannot set initial range in the bottom chart (for example, i need to display values for a specific year in the upper chart and set this year range as an initial filter in the below chart) when the chart loaded. Is it possible to implement this feature?</p>
  
  <p>var app = angular.module('plunker', ['nvd3']);</p>
  
  <pre><code>app.controller('MainCtrl', function($scope) {
    $scope.options = {
    chart: {
      type: 'linePlusBarWithFocusChart',
      //chart settings
  };
  
  $scope.data = [
  {
      "key" : "Quantity" ,
      "bar": true,
      "values" : [ DATA ]
  },
  {
       "key" : "Price" ,
       "values" : [   ],
       "remove": true
  }
  ].map(function(series) {
      series.values = series.values.map(function(d) { return {x: d[0], y: d[1] } });
      return series;
  </code></pre>
  
  <p>Here is my <a href="http://plnkr.co/edit/Ap6tiTdfysgJ6GMGUpyw?p=preview" rel="nofollow">code</a>. Please help me.</p>