Groups examples and some boolean checks corrected

examples/groups/add to group 2.php

@@ -0,0 +1,56 @@
+<?php
+    $title = "Adding to group using create";
+    require('../head.php');
+?>
+
+<script type="text/javascript">
+
+(function () {
+
+    var game = new Phaser.Game(800, 600, Phaser.CANVAS, '', { preload: preload, create: create,render:render });
+
+   function preload() {
+        game.load.image('ufo', 'assets/sprites/ufo.png');
+        game.load.image('baddie', 'assets/sprites/space-baddie.png');
+        
+    }
+
+    var friendAndFoe,
+        enemies;
+
+    function create() {
+        // Create some local groups for later use.
+        friendAndFoe = game.add.group();
+        enemies = game.add.group();
+
+        // You can directly create sprite and add it to a group
+        // using just one line. 
+        friendAndFoe.create(200, 240, 'ufo');
+
+        // Create some enemies.
+        for (var i = 0; i < 8; i++) {
+            createBaddie();
+        }
+
+        // Tap to create new baddie sprites.
+        game.input.onTap.add(createBaddie, this);
+    }
+    function createBaddie() {
+
+        enemies.create(360 + Math.random() * 200, 120 + Math.random() * 200,'baddie');
+    }
+
+    function render() {
+
+        game.debug.renderText('Tap screen or click to create new baddies.', 16, 24);
+    }
+
+
+})();
+
+</script>
+
+<?php
+    require('../foot.php');
+?>
+