README: set TEMPLATE_DIRECTORY instead of using -t cmdline option

Use same approach in docs and README, to make
it more consistent.

Prompted by Jay Lawrence (@jayjlawrence),
see commit 09137840c2 and
https://github.com/grml/grml-live/pull/76

diff --git a/README.md b/README.md
index 8fc6f69..12d6a91 100644 (file)
--- a/README.md
+++ b/README.md
@@ -24,4 +24,5 @@ of an installed `grml-live` package:
     # export GRML_FAI_CONFIG=$(pwd)/etc/grml/fai
     # export SCRIPTS_DIRECTORY=$(pwd)/scripts
     # export LIVE_CONF=$(pwd)/etc/grml/grml-live.conf
-    # ./grml-live -s sid -a amd64 -c GRMLBASE,GRML_FULL,AMD64 -t $(pwd)/templates/
+    # export TEMPLATE_DIRECTORY=$(pwd)/templates
+    # ./grml-live -s sid -a amd64 -c GRMLBASE,GRML_FULL,AMD64