title: Change text "searching" in jquery select2
body: <p>I am using select2 with ajax option, and when ajax runs, a text "searching" appearing until ajax get success. I want to change this text(<code>see in attached image</code>).<a href="https://i.stack.imgur.com/hCkff.png" rel="noreferrer"><img src="https://i.stack.imgur.com/hCkff.png" alt="enter image description here"></a></p>
  
  <p>My code is:(reference from <a href="https://select2.org" rel="noreferrer">https://select2.org</a>)</p>
  
  <pre><code>   $("#employee_id").select2({
        ajax: {
          url: "get_store_data.php?type=employee_data",
          dataType: 'json',
          delay: 250,
          data: function (params) {
            return {
              phrase: params.term, // search term,
              store_name: jQuery("#store_name").val(),
              page: 1
            };
          },
  
          processResults: function (data, params) {
              // console.log(data);
            params.page = params.page || 1;
  
            return {
              results: data.map(function(item) {
                  return {
                      id: item.name,
                      text: item.name
                    };
              }),
              pagination: {
                more: 0
              }
            };
          },
          placeholder: 'Search for a member id',
          cache: true
        },
        escapeMarkup: function (markup) { return markup; }, 
        minimumInputLength: 1
      });
  </code></pre>