Update README.md

Author: webysther

README.md

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 [![License](http://img.shields.io/:license-mit-blue.svg)](http://doge.mit-license.org)
-[![Tag](http://img.shields.io/github/tag/Webysther/as3rpclib.svg)](https://github.com/Webysther/as3rpclib/tree/v1.0)
+[![Tag](http://img.shields.io/github/tag/Webysther/as3rpclib.svg)](https://github.com/Webysther/as3rpclib/releases/latest)
 [![Tip](http://img.shields.io/gittip/Webysther.svg)](https://www.gittip.com/Webysther/)
 
 as3rpclib is a library that can be used to invoke remote procedure calls using: