Update phpdocs and add theme docs

Author: andersao

Diff for: _config.yml

@@ -0,0 +1 @@
+theme: jekyll-theme-cayman

Diff for: composer.json

@@ -18,5 +18,5 @@
             "Prettus\\Validator\\": "src/Prettus/Validator/"
         }
     },
-    "minimum-stability": "dev"
+    "minimum-stability": "stable"
 }

Diff for: src/Prettus/Validator/AbstractValidator.php

@@ -7,6 +7,7 @@
 /**
  * Class AbstractValidator
  * @package Prettus\Validator
+ * @author Anderson Andrade <[email protected]>
  */
 abstract class AbstractValidator implements ValidatorInterface
 {

Diff for: src/Prettus/Validator/Contracts/ValidatorInterface.php

@@ -6,6 +6,7 @@
 /**
  * Interface ValidatorInterface
  * @package Prettus\Validator\Contracts
+ * @author Anderson Andrade <[email protected]>
  */
 interface ValidatorInterface
 {

Diff for: src/Prettus/Validator/Exceptions/ValidatorException.php

@@ -7,6 +7,7 @@
 /**
  * Class ValidatorException
  * @package Prettus\Validator\Exceptions
+ * @author Anderson Andrade <[email protected]>
  */
 class ValidatorException extends \Exception implements Jsonable, Arrayable
 {

Diff for: src/Prettus/Validator/LaravelValidator.php

@@ -5,6 +5,7 @@
 /**
  * Class LaravelValidator
  * @package Prettus\Validator
+ * @author Anderson Andrade <[email protected]>
  */
 class LaravelValidator extends AbstractValidator
 {