fix missing require for first example and fix example spacing in readme

README.md

@@ -25,7 +25,8 @@ Example
 * Fetch the 'date', 'from', 'to', 'subject' message headers and the message structure of all unread messages in the Inbox since May 20, 2010:
 
 ```javascript
-  var Imap = require('imap');
+var Imap = require('imap'),
+    inspect = require('util').inspect;
     
 var imap = new Imap({
       user: 'mygmailname@gmail.com',
@@ -36,7 +37,7 @@ Example
     });
 
 function show(obj) {
-    return util.inspect(obj, false, Infinity);
+  return inspect(obj, false, Infinity);
 }
 
 function die(err) {