Gemfile in celluloid_pubsub-1.0.1 vs Gemfile in celluloid_pubsub-1.0.2

@@ -2,7 +2,7 @@
 
 gemspec
 
 if RUBY_VERSION < "2.2.0"
   gem 'activesupport', '>= 4.0', '< 5.0'
-  gem 'bundler' '< 1.13'
+  gem 'bundler' , '< 1.13'
 end