Correct typo in DEVELOPER.md

Andrew Gaul · gaul · commit 1fc9f9e9302f · 2017-09-16T23:46:06.000-07:00
diff --git a/DEVELOPER.md b/DEVELOPER.md
@@ -4,7 +4,7 @@
 
 ```
 bundle install
-bundle rspec
+bundle exec rspec
 ```
 
 If you want to run the integration test against a real bucket you need to pass
