DOC: readme

README.md

@@ -35,7 +35,7 @@ variables:
 The following additional options may be used to control compilation of a CUDA
 project:
 
- - `CUDA_HOME`:    Specify the path to the CUDA installation directory
+ - `NVCC`:        Path to a specific `nvcc` executable
  - `CUDA_STATIC`:  Statically link against the CUDA runtime and certain;
                   CUDA Toolkit libraris (default is to use dynamic linking).
  - `GENCODEFLAGS`: `-gencode` options specifying the device architectures to