.gitignore in graphql-idl-parser-0.0.1 vs .gitignore in graphql-idl-parser-0.1.0

@@ -10,8 +10,9 @@
 /vendor/cache/ruby/
 /vendor/gems/
 /vendor/ruby
 bin/
 tmp/
+pkg/
 /Gemfile.lock
 
 .byebug_history