Updated README to give credit for logos

Author: sriharshachilakapati

README.md

@@ -135,6 +135,8 @@ Once the terminal says that the server is ready at **http://localhost:9876**, fi
 
 This project is covered by MIT licence. You can read the terms [here](http://opensource.org/licenses/MIT).
 
+The logos were designed by [NegativeZero](http://goharsha.com/webgl4j/logos/128/logo-blue-dark.png) (Twitter: [@NegativeZeroDEV](https://twitter.com/NegativeZeroDEV/)) and is licenced under Creative Commons.
+
 ## Contact
 
 If you want to contact me about this project, or ask any questions, you can e-mail me at [hello@goharsha.com](mailto://hello@goharsha.com). Alternatively, if you are not comfortable with e-mail, you can join the IRC at [#WebGL4J@Freenode](https://kiwiirc.com/client/irc.freenode.net/#WebGL4J)