Fix bld.bat to use Windows environment variable syntax
@@ -2,8 +2,8 @@ set APP_DIR=%PREFIX%\Library\bin\KaleidoApp
set LAUNCH_SCRIPT=%PREFIX%\Library\bin\kaleido.cmd
set BIN_LOCATION=%APP_DIR%/kaleido.cmd
-mkdir -p $APP_DIR
-copy * $APP_DIR
+mkdir %APP_DIR%
+copy * %APP_DIR%
(
echo @echo off
