Added Readme

Author: praveenkumar

README.md

@@ -0,0 +1,13 @@
+# docker-machine-driver-hyperkit
+
+The Hyperkit driver will eventually replace the existing xhyve driver and uses [moby/hyperkit](http://github.com/moby/hyperkit) as a Go library.
+
+To install the hyperkit driver:
+
+```shell
+make build
+```
+
+The hyperkit driver currently requires running as root to use the vmnet framework to setup networking.
+
+If you encountered errors like `Could not find hyperkit executable`, you might need to install [Docker for Mac](https://store.docker.com/editions/community/docker-ce-desktop-mac)