update readme with IQ4_K and IQ5_KS

README.md

@@ -351,14 +351,12 @@ numactl -N 0 -m 0 \
 If you want to disable thinking, add `/nothink` (correct, no underscore) at the *end* of your prompt.
 
 ```bash
-# Clone and checkout experimental PR
+# Clone and checkout experimental PR (hopefully merged into main soon)
 $ git clone https://github.com/ikawrakow/ik_llama.cpp
 $ cd ik_llama.cpp
 $ git remote add Thireus https://github.com/Thireus/ik_llama.cpp.git
 $ git fetch Thireus
-$ git checkout glm-4.5-testing
-# If glm-4.5-clean is ready, use it instead of -testing
-# $ git checkout glm-4.5-clean
+$ git checkout glm-4.5-clean
 
 # Build for hybrid CPU+CUDA
 $ cmake -B build -DCMAKE_BUILD_TYPE=Release -DGGML_CUDA=ON -DGGML_BLAS=OFF -DGGML_SCHED_MAX_COPIES=1