README.md in pbbuilder-0.5.0 vs README.md in pbbuilder-0.6.0

@@ -20,9 +20,10 @@
 ```bash
 $ gem install pbbuilder
 ```
 
 ## Contributing
-Contribution directions go here.
+
+When debugging, make sure you're prepending `::Kernel` to any calls such as `puts` as otherwise the code will think you're trying to add another attribute onto the protobuf.
 
 ## License
 The gem is available as open source under the terms of the [MIT License](https://opensource.org/licenses/MIT).