README.md in graphql-relay-0.4.2 vs README.md in graphql-relay-0.4.3

@@ -42,10 +42,12 @@
 - [Connection with custom arguments](https://github.com/rmosolgo/graphql-relay-ruby/blob/master/spec/support/star_wars_schema.rb#L51-L63)
 - [Connection with a different name than the underlying property](https://github.com/rmosolgo/graphql-relay-ruby/blob/master/spec/support/star_wars_schema.rb#L77)
 
 You can also add custom fields to connection objects: [Example](https://github.com/rmosolgo/graphql-relay-ruby/blob/master/spec/support/star_wars_schema.rb#L36-L43)
 
+At runtime, `graphql-relay` chooses a connection implementation to expose a collection. `graphql-relay` provides `ArrayConnection` and `RelationConnection`, but you can also provide your own with `BaseConnection.register_connection_implementation`.
+
 ### Mutations
 
 Mutations allow Relay to mutate your system. When you define a mutation, you'll be defining:
   - A field for your schema's `mutation` root
   - A derived `InputObjectType` for input values
@@ -69,9 +71,10 @@
   - Mount on mutation type: [example](https://github.com/rmosolgo/graphql-relay-ruby/blob/master/spec/support/star_wars_schema.rb#L127)
 
 ## Todo
 
 - Show how to replace default connection implementations with custom ones
+- Show how to wrap a simple field in a connection field with `ConnectionField.create`
 
 ## More Resources
 
 - [GraphQL Slack](http://graphql-slack.herokuapp.com), come join us in the `#ruby` channel!
 - [`graphql`](https://github.com/rmosolgo/graphql-ruby) Ruby gem