Update documentation with new command name

Change-Id: I41b58e3ac0f0d17418129f81910aee6a2c63976d
Reviewed-on: https://weave-review.googlesource.com/1451
Reviewed-by: Alex Vakulenko <avakulenko@google.com>
diff --git a/README b/README
index 9577e5d..b62b547 100644
--- a/README
+++ b/README
@@ -58,7 +58,7 @@
 
 Execute example:
 
-  sudo out/Debug/weave
+  sudo out/Debug/weave_daemon
 
 
 Prerequisites