Corrected few typos and added a keyboard exampl

examples/groups/add to group 2.php

@@ -23,7 +23,7 @@
         friendAndFoe = game.add.group();
         enemies = game.add.group();
 
-        // You can directly create sprite and add it to a group
+        // You can directly create a sprite and add it to a group
         // using just one line. 
         friendAndFoe.create(200, 240, 'ufo');
 

examples/groups/create group.php

@@ -1,6 +1,6 @@
  
  <?php
-    $title = "Calling a function on all children";
+    $title = "Add a new sprite and log what happened";
     require('../head.php');
 ?>
 

examples/groups/group transform - rotate.php

@@ -1,6 +1,6 @@
  
  <?php
-    $title = "Grouping";
+    $title = "Rotating an entire group";
     require('../head.php');
 ?>
 

examples/groups/group transform.php

@@ -1,6 +1,6 @@
  
  <?php
-    $title = "Grouping";
+    $title = "Grouping and dragging";
     require('../head.php');
 ?>