greybus: update README with info on how to build and contact me.
diff --git a/drivers/staging/greybus/README b/drivers/staging/greybus/README
index 50953b1..b0745d3 100644
--- a/drivers/staging/greybus/README
+++ b/drivers/staging/greybus/README
@@ -1 +1,10 @@
Greybus kernel code
+
+To build against the running kernel (odds are you don't want this):
+ make
+
+To build against a specific kernel source tree (odds are you want this):
+ KERNELDIR=/home/some/random/place make
+
+Any questions / concerns about this code base, please email:
+ Greg Kroah-Hartman <greg@kroah.com>