updated docs and changelog

doc/changelog.rst

@@ -4,7 +4,7 @@ Changelog
 1.2.2 (2014-XX-XX)
 ------------------
 
-* n/a
+* added form.types to the Form provider
 
 1.2.1 (2014-07-01)
 ------------------

doc/providers/form.rst

@@ -166,6 +166,14 @@ form by adding constraints on the fields::
         ))
         ->getForm();
 
+You can register form types by extending ``form.types``::
+
+    $app['form.types'] = $app->share($app->extend('form.types', function ($types) use ($app) {
+        $types[] = new YourFormType();
+
+        return $types;
+    }));
+
 You can register form extensions by extending ``form.extensions``::
 
     $app['form.extensions'] = $app->share($app->extend('form.extensions', function ($extensions) use ($app) {