README.md in graphql-batch-0.4.0 vs README.md in graphql-batch-0.4.1

@@ -46,11 +46,13 @@
     ids.each { |id| fulfill(id, nil) unless fulfilled?(id) }
   end
 end
 ```
 
-Use `GraphQL::Batch` as a plugin in your schema (for graphql >= `1.5.0`).
+Use `GraphQL::Batch` as a plugin in your schema _after_ specifying the mutation
+so that `GraphQL::Batch` can extend the mutation fields to clear the cache after
+they are resolved (for graphql >= `1.5.0`).
 
 ```ruby
 class MySchema < GraphQL::Schema
   query MyQueryType
   mutation MyMutationType
@@ -67,19 +69,10 @@
 
   GraphQL::Batch.use(self)
 end
 ```
 
-##### With `1.9.0`'s `Interpreter` runtime
-
-Add `GraphQL::Batch` _after_ the interpreter, so that `GraphQL::Batch` can detect the interpreter and attach the right integrations:
-
-```ruby
-use GraphQL::Execution::Interpreter
-use GraphQL::Batch
-```
-
 #### Field Usage
 
 The loader class can be used from the resolver for a graphql field by calling `.for` with the grouping arguments to get a loader instance, then call `.load` on that instance with the key to load.
 
 ```ruby
@@ -97,10 +90,10 @@
 ```ruby
 field :products, [Types::Product, null: true], null: false do
   argument :ids, [ID], required: true
 end
 
-def product(ids:)
+def products(ids:)
   RecordLoader.for(Product).load_many(ids)
 end
 ```
 
 Although this library doesn't have a dependency on active record,