fix license link

Author: TomWFox

README.md

@@ -781,4 +781,4 @@ As of April 5, 2017, Parse, LLC has transferred this code to the parse-community
 [Get Composer]: https://getcomposer.org/download/
 [Parse PHP Guide]: http://docs.parseplatform.org/php/guide/
 [license-svg]: https://img.shields.io/badge/license-BSD-lightgrey.svg
-[license-link]: https://github.com/parse-community/Parse-SDK-JS/blob/master/LICENSE
+[license-link]: LICENSE