Examples (audio, button,camera), and docs

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

examples/camera/basic follow.php

@@ -0,0 +1,76 @@
+ 
+ <?php
+	$title = "Following the player";
+	require('../head.php');
+?>
+
+<script type="text/javascript">
+
+(function () {
+
+	var game = new Phaser.Game(800, 600, Phaser.CANVAS, '', { preload: preload, create: create, update: update });
+
+    var baddie,
+        keys=Phaser.Keyboard;
+
+	function preload() {
+
+        game.load.image('background','assets/misc/starfield.jpg');
+        game.load.image('ufo','assets/sprites/ufo.png');
+        game.load.image('baddie','assets/sprites/space-baddie.png');
+
+
+	}
+
+    
+
+	function create() {
+
+		game.add.tileSprite(0, 0, 2000, 2000, 'background');
+
+        game.world.setSize(1400,1400);
+
+        for(var i=0,nb=10;i<nb;i++){
+
+            game.add.sprite(game.world.randomX,game.world.randomY,'ufo');
+        }
+
+        baddie=game.add.sprite(150,320,'baddie');
+
+        game.camera.follow(baddie);
+
+	}
+
+	function update() {
+
+		baddie.body.velocity.x=baddie.body.velocity.y=0;
+
+
+        if(game.input.keyboard.isDown(keys.LEFT) && !game.input.keyboard.isDown(keys.RIGHT)){
+            
+            baddie.body.velocity.x=-155;
+            
+        }
+        else if(game.input.keyboard.isDown(keys.RIGHT) && !game.input.keyboard.isDown(keys.LEFT)){
+            baddie.body.velocity.x=155;
+
+        }
+        else if(game.input.keyboard.isDown(keys.UP) && !game.input.keyboard.isDown(keys.DOWN)){
+            
+            baddie.angle=90;
+            baddie.body.velocity.y=-155;
+            
+        }
+        else if(game.input.keyboard.isDown(keys.DOWN) && !game.input.keyboard.isDown(keys.UP)){
+            baddie.angle=90;
+            baddie.body.velocity.y=155;
+        }
+	}
+
+})();
+
+</script>
+
+<?php
+	require('../foot.php');
+?>