title: Twitter bootstrap typeahead delay
body: <p>I use twitter bootstrap typeahead for displaying some data from server, the problem is when user types an letter typeahead makes an ajax call to server and when I try to type 2 or 3 letters fast it will make 2 or 3 ajax calls to server, is there a possibility to make an delay when user is typing letters to make only one ajax call to server</p>
  
  <p>my code at the moment:</p>
  
  <pre><code>$('#SEARCH-INPUT').typeahead({
                              source: function (query, process) {
  
                                  jQuery.ajax({
                                      type: "GET",
                                      url: "/organisations/search",
                                      data: {search_name: $("#SEARCH-INPUT").val()},
                                      beforeSend: function(){
                                          $("#SEARCH-LOADING").show();
                                      },
                                      success: function (data) {
                                          organisations = [];
                                          organisations_hash = {};
                                        $.each(data, function(i, item){
                                          organisations_hash[item.name.toUpperCase()] = item.id;
                                          organisations.push(item.name);
  
                                        });
                                        organisations.sort();
  
                                        $("#SEARCH-LOADING").addClass("hidden");
                                        process(organisations);
                                      },
                                      error: function (){ alert("error");},
                                      async:   false
                                      });
                              }
                              ,updater: function (item) {
                                  $("#SEARCH-INPUT").val(item);
                                  $("#SEARCH-BUTTON").click();
                                  return item;
                              }
                              ,items: 9
                              ,minLength: 1
                         });
  </code></pre>