Host insane unsafe usage

host/README.md

@@ -1,35 +1,3 @@
 # Host
 
-Simple things that can be demonstrated by inserting a module into the currently running host. Tested on Ubuntu 16.04.
-
-1. [hello](hello.c)
-
-## Rationale
-
-This method easier to setup, but it is not recommended for development, as:
-
-- it may break your system
-- you can't control which kernel version to use
-
-Use VMs instead.
-
-## Usage
-
-We only use it for super simple examples.
-
-Build, insert and remove a hello world module:
-
-    make
-
-    sudo insmod hello.ko
-
-    # Our module should be there.
-    sudo lsmod | grep hello
-
-    # Last message should be: init_module
-    dmest -T
-
-    sudo rmmod hello
-
-    # Last message should be: cleanup_module
-    dmest -T
+Minimal host build system sanity check example.