update logo in readme

Author: Adam Gołąb

README.md

@@ -51,6 +51,6 @@ reactNativeOpencvTutorial is copyright © 2014-2018 [Brainhub](https://brainhub.
 
 reactNativeOpencvTutorial is maintained by the Brainhub development team. It is funded by Brainhub and the names and logos for Brainhub are trademarks of Brainhub Sp. z o.o.. You can check other open-source projects supported/developed by our teammates here. 
 
-[![Brainhub](http://brainhubeu.github.io/brainhub.svg)](https://brainhub.eu/?utm_source=github)
+[![Brainhub](http://brainhub.eu/brainhub.svg)](https://brainhub.eu/?utm_source=github)
 
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