Examples (audio, button,camera), and docs

Created some examples (audio, button,camera), and documented the source
code along the way

examples/camera/moving the game camera.php

@@ -0,0 +1,60 @@
+ 
+ <?php
+	$title = "Moving the game camera with the keyboard";
+	require('../head.php');
+?>
+
+<script type="text/javascript">
+
+(function () {
+
+	var game = new Phaser.Game(800, 600, Phaser.AUTO, '', { preload: preload, create: create, update: update });
+
+	function preload() {
+
+        game.load.tilemap('snes', 'assets/maps/smb_tiles.png', 'assets/maps/smb_level1.json', null, Phaser.Tilemap.JSON);
+	}
+
+	function create() {
+
+
+		//setting the size of the game world larger than the tilemap's size
+		game.world.setSize(2000,2000);
+
+        // game.camera.width=150;
+        // game.camera.height=150;
+
+		game.stage.backgroundColor = '#255d3b';
+
+		// adding the tilemap
+        game.add.tilemap(0, 168, 'snes');
+
+	}
+
+	function update() {
+		if (game.input.keyboard.isDown(Phaser.Keyboard.LEFT))
+        {
+            game.camera.x -= 8;
+        }
+        else if (game.input.keyboard.isDown(Phaser.Keyboard.RIGHT))
+        {
+            game.camera.x += 8;
+        }
+
+        if (game.input.keyboard.isDown(Phaser.Keyboard.UP))
+        {
+            game.camera.y -= 8;
+        }
+        else if (game.input.keyboard.isDown(Phaser.Keyboard.DOWN))
+        {
+            game.camera.y += 8;
+        }
+	}
+
+})();
+
+</script>
+
+<?php
+	require('../foot.php');
+?>