fix(README): point to v1.4.0 release urls

Author: thgreasi

README.md

@@ -31,7 +31,7 @@ All warnings generated by this plugin start with the string "JQMIGRATE". A list
 The development version provides console warning messages when deprecated and/or removed APIs are used. Use this version during development and debugging, and whenever you are reporting bugs to the jQuery team.
 
 **Latest released development version:** This file is hosted on jQuery's CDN, and can be hotlinked if desired.
-[https://code.jquery.com/jquery-migrate-1.3.0.js](https://code.jquery.com/jquery-migrate-1.3.0.js)
+[https://code.jquery.com/jquery-migrate-1.4.0.js](https://code.jquery.com/jquery-migrate-1.4.0.js)
 
 **Current work-in-progress build:** Although this file represents the most recent updates to the plugin, it may not have been thoroughly tested.
 [https://code.jquery.com/jquery-migrate-git.js](https://code.jquery.com/jquery-migrate-git.js)
@@ -41,7 +41,7 @@ The development version provides console warning messages when deprecated and/or
 The minified production file is compressed and does not generate console warnings. It will only generate a console log message upon loading, or if it detects and error such as an outdated version of jQuery that it does not support. Do not use this file for development or debugging, it will make your life miserable.
 
 **Latest released production version:**
-[https://code.jquery.com/jquery-migrate-1.3.0.min.js](https://code.jquery.com/jquery-migrate-1.3.0.min.js)
+[https://code.jquery.com/jquery-migrate-1.4.0.min.js](https://code.jquery.com/jquery-migrate-1.4.0.min.js)
  This file is hosted on jQuery's CDN, and can be hotlinked if desired.
 
 **Current work-in-progress build:** Although this file represents the most recent updates to the plugin, it may not have been thoroughly tested. We do not recommend using this file on production sites since it may be unstable; use the released production version above.