title: Introducing delay while ajax call in select2 plugin
body: <p>I am using select 2 example from <a href="http://ivaynberg.github.io/select2/" rel="noreferrer">http://ivaynberg.github.io/select2/</a>
  I am using "Loading Remote Data" example in this page.</p>
  
  <p>Problem: As soon as I type a letter, system makes an ajax call. I want to introduce delay of 1 second during this request which will allow the user to type his search string.</p>
  
  <p>I am adding code from the site. Please let me know how to introduce delay.</p>
  
  <pre><code>("#e6").select2({
              placeholder: "Search for a movie",
              minimumInputLength: 1,
              ajax: { // instead of writing the function to execute the request we use Select2's convenient helper
                  url: "http://api.rottentomatoes.com/api/public/v1.0/movies.json",
                  dataType: 'jsonp',
                  data: function (term, page) {
                      return {
                          q: term, // search term
                          page_limit: 10,
                          apikey: "ju6z9mjyajq2djue3gbvv26t" // please do not use so this example keeps working
                      };
                  },
                  results: function (data, page) { // parse the results into the format expected by Select2.
                      // since we are using custom formatting functions we do not need to alter remote JSON data
                      return {results: data.movies};
                  }
              },
              initSelection: function(element, callback) {
                  // the input tag has a value attribute preloaded that points to a preselected movie's id
                  // this function resolves that id attribute to an object that select2 can render
                  // using its formatResult renderer - that way the movie name is shown preselected
                  var id=$(element).val();
                  if (id!=="") {
                      $.ajax("http://api.rottentomatoes.com/api/public/v1.0/movies/"+id+".json", {
                          data: {
                              apikey: "ju6z9mjyajq2djue3gbvv26t"
                          },
                          dataType: "jsonp"
                      }).done(function(data) { callback(data); });
                  }
              },
              formatResult: movieFormatResult, // omitted for brevity, see the source of this page
              formatSelection: movieFormatSelection,  // omitted for brevity, see the source of this page
              dropdownCssClass: "bigdrop", // apply css that makes the dropdown taller
              escapeMarkup: function (m) { return m; } // we do not want to escape markup since we are displaying html in results
          });
  </code></pre>