setup in git-multi-2.6.0

- old
+ new

@@ -1,9 +1,11 @@
 #!/usr/bin/env bash
 set -euo pipefail
 IFS=$'\n\t'
 set -vx
 
+[ -f Brewfile ] && brew bundle
+
 rbenv install -s
 gem install --conservative bundler
 bundle install
 
 set +vxeu