examples: Document example_vm.c file
* Copyright 2018 The EVMC Authors.
* Licensed under the Apache License, Version 2.0. See the LICENSE file.
*/
+
+/// @file
+/// Example implementation of the EVMC VM interface.
+///
+/// This VM does not do anything useful except for showing
+/// how EVMC VM API should be implemented.
+/// The inplementation is done in C only, but could be done in C++ in very
+/// similar way.
+
#include "example_vm.h"
#include <limits.h>
