updates logos

Author: gfursin

README.md

@@ -1,5 +1,4 @@
-[![logo](https://github.com/ctuning/ck-guide-images/blob/master/logo-powered-by-ck.png)](http://cKnowledge.org)
-[![logo](https://github.com/ctuning/ck-guide-images/blob/master/logo-validated-by-the-community-simple.png)](http://cTuning.org)
+[![compatibility](https://github.com/ctuning/ck-guide-images/blob/master/ck-compatible.svg)](https://github.com/ctuning/ck)
 [![License](https://img.shields.io/badge/License-BSD%203--Clause-blue.svg)](https://opensource.org/licenses/BSD-3-Clause)
 
 This repository contains CK packages to build, test, benchmark and tune development versions of various compilers (LLVM, GCC, etc)