output debugging

script/bootstrap

@@ -14,10 +14,12 @@ set +e
 echo 'Running bundler'
 # get ruby version in format '2.1.0' from example 2.1.0p000
 RVERSION=$(ruby -v | awk '{ print $2 }' | sed 's/p.*//')
-# write RVERSION to .ruby_version file
-echo $RVERSION > "${DIR}/.ruby_version"
 
 echo "Ruby version is $RVERSION"
+echo "RUBY_VERSION is $RUBY_VERSION"
+echo "gemfile contents:"
+cat "${DIR}/Gemfile"
+
 cd "${DIR}" && \
   rm -f Gemfile.lock && \
   bundle install --without='' --no-prune --path vendor/bundle --local && \