README_V3.md in schemacop-3.0.24 vs README_V3.md in schemacop-3.0.25

@@ -107,12 +107,12 @@
 * `examples`: Here, you can provide examples which will be valid for the schema
 * `enum`: Here, you may enumerate values which will be valid, if the provided
   value is not in the array, the validation will fail
 * `default`: You may provide a default value for items that will be set if the
   value is not given
-* `require_key`: If set to true, validate that the key of this node is present, 
-  regardless of the value (including `nil`). This is only validated if the 
+* `require_key`: If set to true, validate that the key of this node is present,
+  regardless of the value (including `nil`). This is only validated if the
   schema type is set to `:hash`.
   Example:
   ```ruby
   Schemacop::Schema3.new(:hash) do
     str? :foo, require_key: true
@@ -671,13 +671,14 @@
 
 ##### List validation
 
 List validation validates a sequence of arbitrary length where each item matches
 the same schema. Unless you specify a `min_items` count on the array node, an
-empty array will also suffice. To specify a list validation, use the `list` DSL
-method, and specify the type you want to validate against. Here, you need to
-specify the type of the element using the long `type` name (e.g. `integer` and
-not `int`).
+empty array will also suffice. If the option `required: true` is not specified,
+a list containing only `nil` values is also valid. To specify a list validation,
+use the `list` DSL method, and specify the type you want to validate against.
+Here, you need to specify the type of the element using the long `type` name
+(e.g. `integer` and not `int`).
 
 For example, you can specify that you want an array with only integers between 1 and 5:
 
 ```ruby
 schema = Schemacop::Schema3.new :array do