[yocto] [auh][PATCH 4/4] README: clarify warning

[Paul Eggleton]

Emails only get sent when "all" is used (at least at the moment).

Signed-off-by: Paul Eggleton <paul.eggleton at linux.intel.com>
---
 README | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/README b/README
index c43fa5e..ec3f955 100644
--- a/README
+++ b/README
@@ -59,9 +59,10 @@ require conf/distro/include/upstream_tracking.inc
 WARNING: if you are using the default maintainers.inc file supplied
          with Poky (in meta-yocto) and you don't set a
          maintainers_whitelist or maintainer_override in the
-         upgrade-helper configuration as above, the script will
-         automatically send out emails to the default maintainers.
-         Please be careful not to do this :)
+         upgrade-helper configuration as above, and you specify "all"
+         on the command line, the script will automatically send out
+         emails to the default maintainers. Please be careful not to
+         do this :)
 
 4. Enable buildhistory by adding the following lines to your
 conf/local.conf file:
-- 
1.9.3