Merge pull request #200 from spuder/patch-1

warn osx limitation

README.md

@@ -72,6 +72,7 @@ The default labels applied to master nodes has changed since Kubernetes 1.11, so
 ### Installing from a container
 
 This command copies the kube-bench binary and configuration files to your host from the Docker container:
+** binaries compiled for linux-x86-64 only (so they won't run on OSX or Windows) **
 ```
 docker run --rm -v `pwd`:/host aquasec/kube-bench:latest install
 ```