[v0.10] Update build script and README

build.sh

@@ -10,8 +10,10 @@ cd build/
 # In case you have CUDA installed but it is not detected,
 # - set CMAKE_CUDA_COMPILER to your nvcc binary:
 # - set CMAKE_CUDA_COMPILER_TOOLKIT_ROOT to the CUDA root dir
-cmake -DCMAKE_CUDA_COMPILER=/usr/local/cuda/bin/nvcc -DCMAKE_CUDA_COMPILER_TOOLKIT_ROOT=/usr/local/cuda/ ..
-#cmake ..
+# for example:
+# cmake -DCMAKE_CUDA_COMPILER=/usr/local/cuda/bin/nvcc -DCMAKE_CUDA_COMPILER_TOOLKIT_ROOT=/usr/local/cuda/ ..
+
+cmake ..
 make -j$(nproc)
 cd -
 ln -s build/gpufetch .