README: Add quip on keys.conf supporting env vars
Since Change-Id: If4f169d9ed4f37b6ebd062508de058f3baeafead
the insert_keys.py tool has had support for expanding
environment variable strings. This change addresses the lack
of an updated README covering said change.
Change-Id: I88e81ea58fb84110da3fc3cfb8b49fd0d6c027c2
diff --git a/README b/README
index debdf2e..b1e979c 100644
--- a/README
+++ b/README
@@ -114,7 +114,9 @@
any string specified in TARGET_BUILD_VARIANT. All tags are matched verbatim
and all options are matched lowercase. The options are "tolowered" automatically
for the user, it is convention to specify tags and options in all uppercase
- and tags start with @.
+ and tags start with @. The option arguments can also use environment variables
+ via the familiar $VARIABLE syntax. This is often useful for setting a location
+ to ones release keys.
NOTE: The pem files are base64 encoded and PackageManagerService, mac_permissions.xml
and setool all use base16 encodings.