message: Fix python sample.
diff: import asyncio
  +import time
  from src import anoncreds, signus, ledger, agent
  @@ -12,3 +13,4 @@ async def main():
  if __name__ == '__main__':
  loop = asyncio.get_event_loop()
  loop.run_until_complete(main())
  + time.sleep(1) # FIXME waiting for libindy thread complete
  