add missing newline

CaseyFaist · CaseyFaist · commit c61e61c15352 · 2018-09-05T15:53:42.000-04:00
diff --git a/spec/spec_helper.rb b/spec/spec_helper.rb
@@ -20,4 +20,4 @@
   exit 0 if ENV['TRAVIS_PULL_REQUEST'] != 'false' && ENV['TRAVIS_BRANCH'] == 'master'
 end
 
-DEFAULT_STACK = 'heroku-16'
+DEFAULT_STACK = 'heroku-16'
