README.md in fido_metadata-0.2.0 vs README.md in fido_metadata-0.3.0

@@ -67,10 +67,12 @@
 end
 ```
 
 ## Development
 
-After checking out the repo, run `bin/setup` to install dependencies. Then, run `bin/rspec` to run the tests. You can also run `bin/console` for an interactive prompt that will allow you to experiment.
+After checking out the repo, run `bin/setup` to install dependencies. Then, run `bin/rspec` to run the tests.
+
+You can also run `MDS_TOKEN=yourtoken bin/console` for an interactive prompt that will allow you to experiment. It is configured to use a simple in-memory cache. If you don't supply the token via the environment variable, the prompt will print instructions to set it in another way.
 
 To install this gem onto your local machine, run `bundle exec rake install`. To release a new version, update the version number in `version.rb`, and then run `bundle exec rake release`, which will create a git tag for the version, push git commits and tags, and push the `.gem` file to [rubygems.org](https://rubygems.org).
 
 ## Contributing