setup in consenter-1.0.4

- old
+ new

@@ -1,12 +1,13 @@
 #!/usr/bin/env bash
 set -euo pipefail
 IFS=$'\n\t'
 set -vx
 
-rbenv install -s
+[ -f Brewfile ] && brew bundle
+[ -f .ruby-version ] && rbenv install -s
 gem install --conservative bundler
-bundle install
+[ -f Gemfile ] && bundle install
 
 set +vxeu
 echo
 
 # That's all Folks!