Clean-up for README file (jfeldstein#29)

Thanks for contributing!


* Renamed README->README.md

* Changed README tags to MarkDown, improves appearance of README on GitHub

* Added valid_extensions to the MORE example

* Added HTML example

* Modernized JavaScript object syntax

* Added name attribute to HTML example

README → README.md

@@ -5,33 +5,38 @@ response to a callback, nothing else.
 - It does not require your server to respond in any particular way
 - It does not matter how many files you use, or where they are on the page
 
--- Use as little as --
+**Simple HTML**
+
+    <input type="file" id="one-specific-file" name="one-specific-file">
+
+**Use as little as**
 
     $('#one-specific-file').ajaxfileupload({
-      'action': '/upload.php'
+      action: '/upload.php'
     });
 
--- or as much as --
+**or as much as**
 
     $('input[type="file"]').ajaxfileupload({
-      'action': '/upload.php',
-      'params': {
-        'extra': 'info'
+      action: '/upload.php',
+      valid_extensions : ['md','csv'],
+      params: {
+        extra: 'info'
       },
-      'onComplete': function(response) {
+      onComplete: function(response) {
         console.log('custom handler for file:');
         alert(JSON.stringify(response));
       },
-      'onStart': function() {
+      onStart: function() {
         if(weWantedTo) return false; // cancels upload
       },
-      'onCancel': function() {
+      onCancel: function() {
         console.log('no file selected');
       }
     });
 
 
-* Copyright (c) 2011 Jordan Feldstein
+Copyright (c) 2011 Jordan Feldstein
 
 Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: