Bump version to v0.5.7

doc/template.html

@@ -2,7 +2,7 @@
 <html>
 <head>
   <meta charset="UTF-8" />
-  <title>{{section}}Node.js v0.5.6 Manual &amp; Documentation</title>
+  <title>{{section}}Node.js v0.5.7 Manual &amp; Documentation</title>
   <link type="image/x-icon" rel="icon" href="/favicon.ico" />
   <link type="image/x-icon" rel="shortcut icon" href="/favicon.ico" />
   <link rel="stylesheet" href="assets/style.css" type="text/css" media="all" />
@@ -11,7 +11,7 @@
 <body>
   <div id="container">
     <header>
-      <h1>Node.js v0.5.6 Manual &amp; Documentation</h1>
+      <h1>Node.js v0.5.7 Manual &amp; Documentation</h1>
       <div id="gtoc">
         <p><a href="index.html">Index</a> | <a href="all.html">View on single page</a></p>
       </div>