Change variable definition style

Use 'var' everytime, instead of using ','.

examples/events.html

@@ -38,10 +38,11 @@
 
 <p><strong>Start / End</strong> <span id="start-end">(scroll to the start or end of an axis)</span></p>
 <script>
-    var container = document.querySelector('.container')
-            , axis = document.getElementById('axis')
-            , direction = document.getElementById('direction')
-            , startEnd = document.getElementById('start-end');
+    var container = document.querySelector('.container');
+    var axis = document.getElementById('axis');
+    var direction = document.getElementById('direction');
+    var startEnd = document.getElementById('start-end');
+
     Ps.initialize(container);
 
     document.addEventListener('ps-scroll-y', function () {
@@ -83,7 +84,6 @@
     document.addEventListener('ps-x-reach-end', function () {
         startEnd.innerHTML = 'Reached end of <em>X-Axis</em>'
     });
-
 </script>
 </body>
 </html>