add Redirect.md

docs/003.Redirect.md

@@ -0,0 +1,33 @@
+Redirect
+========
+
+The plugin allows redirect to specified route or url. It returns the instance
+of `Psr\Http\Message\ResponseInterface`:
+```
+use Es\ControllerPlugins\PluginsTrait;
+
+class ExampleController
+{
+    use PluginsTrait;
+
+    public function indexAction()
+    {
+        // ...
+        return $this->redirect()->toUrl('http://google.com');
+    }
+}
+```
+```
+use Es\ControllerPlugins\PluginsTrait;
+
+class ExampleController
+{
+    use PluginsTrait;
+
+    public function indexAction()
+    {
+        // ...
+        return $this->redirect()->toRoute('foo', ['bar' => 'baz']);
+    }
+}
+```