chore: updated EachValue rule documentation

Author: andrepimpao

docs/03-rules.md

@@ -4,7 +4,7 @@
 - [Comparison Rules](#comparison-rules)
 - [Date Rules](#date-rules)
 - [Choice Rules](#choice-rules)
-- [Other Rules](#other-rules)
+- [Iterable Rules](#iterable-rules)
 
 ## Basic Rules
 
@@ -28,6 +28,6 @@
 - [Choice](03x-rules-choice.md)
 - [Country](03x-rules-country.md)
 
-## Other Rules
+## Iterable Rules
 
-- [All](03x-rules-all.md)
+- [EachValue](03x-rules-eachvalue.md)

docs/03x-rules-all.md

@@ -0,0 +1,48 @@
+## EachValue
+
+Validates every element of an `array` or object implementing `\Traversable` with a given set of rules.
+
+```php
+EachValue(
+    Validator $validator,
+    string $message = 'At key "{{ key }}": {{ message }}'
+);
+```
+
+## Basic Usage
+
+```php
+Validator::eachValue(Validator::notBlank()->greaterThan(1)->lessThan(10))->validate([4, 5, 6]); // true
+Validator::eachValue(Validator::notBlank()->greaterThan(1)->lessThan(10))->validate([4, 5, 20]); // false
+```
+
+> **Note**
+> An `UnexpectedValueException` will be thrown when the input value is not an `array` or an object implementing `\Traversable`.
+
+## Options
+
+### `validator`
+
+type: `Validator` `required`
+
+Validator that will validate each element of an `array` or object implementing `\Traversable`. 
+
+### `message`
+
+type: `string` default: `At "{{ key }}": {{ message }}`
+
+Message that will be shown if at least one input value element is invalid according to the given `validator`.
+
+```php
+Validator::all(Validator::notBlank())->assert(['red', 'green', ''], 'Test'); 
+// Throws: At key "2": The "Test" value should not be blank, "" given.
+```
+
+The following parameters are available:
+
+| Parameter       | Description                                   |
+|-----------------|-----------------------------------------------|
+| `{{ value }}`   | The current invalid value                     |
+| `{{ name }}`    | Name of the invalid value                     |
+| `{{ key }}`     | The array key of the invalid array element    |
+| `{{ message }}` | The rule message of the invalid array element |