title: i want set format of md-datepicker to dd-mm-yyyy
body: <p>datepicker of angular material.
  i want to keep change format of date picker to dd-mm-yyyy.</p>
  
  <pre><code>angular.module('MyApp')
  .controller('AppCtrl', function($scope) {
    $scope.myDate = new Date();
  
    $scope.minDate = new Date(
      $scope.myDate.getFullYear(),
      $scope.myDate.getMonth() - 2,
      $scope.myDate.getDate());
  
    $scope.maxDate = new Date(
      $scope.myDate.getFullYear(),
      $scope.myDate.getMonth() + 2,
      $scope.myDate.getDate());    }).config(function($mdDateLocaleProvider) {
      $mdDateLocaleProvider.formatDate = function(date) {
  return moment(date).format('YYYY-MM-DD');
  };
  });
  </code></pre>
  
  <p>but i want one time configuration for all date picker in application.
  i think this example is for single date picker.</p>