Pass btn and jtippy instance to title function

Author: HTMLGuyLLC

README.md

@@ -67,7 +67,7 @@ Defaults are shown
 ```javascript
 $(function(){
   $('[data-toggle="tooltip"]').jTippy({
-        //string/function returning string: overridden by the title attribute - function is run every time the tooltip is displayed and can be used to grab content via XHR/AJAX 
+        //string/function(btn, jtippy):string returning string: overridden by the title attribute - function is run every time the tooltip is displayed and can be used to grab content via XHR/AJAX 
         title: '',
         //string ('click', 'hover', 'focus', 'hoverfocus'): defines when the tooltip should be shown
         trigger: 'hoverfocus',

index.html

@@ -180,7 +180,7 @@ <h4>All options and events with defaults:</h4>
         <pre style="display:inline-block;width:800px;max-width:100%; text-align:left;"><code class="javascript">
     $(function(){
       $('[data-toggle="tooltip"]').jTippy({
-            //string/function returning string: overridden by the title attribute - function is run every time the tooltip is displayed and can be used to grab content via XHR/AJAX
+            //string/function(btn, jtippy):string - overridden by the title attribute - function is run every time the tooltip is displayed and can be used to grab content via XHR/AJAX
             title: '',
             //string ('click', 'hover', 'focus', 'hoverfocus'): defines when the tooltip should be shown
             trigger: 'hoverfocus',

jTippy.js

@@ -216,7 +216,7 @@
                 }
                 //get string from function
                 if( typeof trigger_event === 'undefined' || trigger_event ){
-                    if( typeof helper.title === 'function' ) helper.content = helper.title();
+                    if( typeof helper.title === 'function' ) helper.content = helper.title(helper.dom_wrapped, helper);
                 }
                 //add the tooltip to the dom
                 body.append(helper.createTooltipHTML());

jTippy.min.js

@@ -1,6 +1,6 @@
 {
   "name": "jtippy",
-  "version": "1.7.1",
+  "version": "1.7.2",
   "description": "jQuery tooltip plugin",
   "author": { 
     "name" : "HTMLGuy, LLC",