Added some more info to readme

diff --git a/tools/sign_gen/README b/tools/sign_gen/README
index 870c069..9554fe2 100644 (file)
--- a/tools/sign_gen/README
+++ b/tools/sign_gen/README
@@ -17,3 +17,5 @@ Font sizes used, and their number:
 3: sans condensed: 64, 46 for elevator buttons
 4: sans bold condensed: 64, 44 for elevator buttons
 
+So to generate all 4 sign zip files, you would do:
+./run.sh 1 && ./run.sh 2 && ./run.sh 3 && ./run.sh 4