Updating CDN links

Author: eligrey

README.md

@@ -4,8 +4,8 @@ This works in every browser except IE 7 or earlier.
 
 The current version is hosted at public CDNs, allowing you to use this already small file at nearly zero size overhead. Use one of these URLs:
 
-  - [//cdnjs.cloudflare.com/ajax/libs/classlist/2014.01.31/classList.min.js](//cdnjs.cloudflare.com/ajax/libs/classlist/2014.01.31/classList.min.js)
-  - [//cdn.jsdelivr.net/classlist/2014.01.31/classList.min.js](//cdn.jsdelivr.net/classlist/2014.01.31/classList.min.js)
+  - [//cdnjs.cloudflare.com/ajax/libs/classlist/2014.07.23/classList.min.js](//cdnjs.cloudflare.com/ajax/libs/classlist/2014.01.31/classList.min.js)
+  - [//cdn.jsdelivr.net/classlist/2014.07.23/classList.min.js](//cdn.jsdelivr.net/classlist/2014.01.31/classList.min.js)
 
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