title: tour.goTo(i) is not working
body: <p>Following is my reference Code :</p>
  
  <p>I am using Bootstrap tour for my application. </p>
  
  <p><strong>Requirement :</strong> </p>
  
  <ul>
  <li>I am on first step when I click on next then it is checking the value of '#id2'.
  If id2 value is not blank then it should skip that step and move to 3rd step directly.</li>
  </ul>
  
  <p>For this I am trying <strong>tour.goTo(3)</strong>.
  But this is not working.
  Any help?</p>
  
  <pre><code>tour.addSteps([
          {
              element:" #id1",
              title: "1",
              content: "1st Content.",
              placement: "top",
              onShow: function () {
                  console.log('This is Onshow Function');
              },
              onNext: function () {       
                  client_text = $('#id2').text();
                  if(client_text != ''){
                      console.log('----------client code present----------');
                      tour.goTo(3)
                      //tour.next();
                      //tour.hideStep(2)
                      return false
                  }
                  else{
                      console.log('-------client code not present--------');
                  }
              },
              onHidden:function () {      
                  tour.hideStep(2)
                  }
          },
          {
              element:" #id2",
              title: "2",
              content: "2nd Content",
              placement: "top",
              onShow: function () {
                  console.log('second step');         
              }
          },
          {
              element:" #id3",
              title: "3",
              content: "3rd Content",
              placement: "top",           
              onShow: function () {
                  console.log('third step');          
              }           
          }
      ]);
  </code></pre>