Updating readme

README.md

@@ -18,10 +18,11 @@ use Coduo\Flipper\Activation\Strategy;
 $context = new Flipper\Activation\Context('default');
 $context2 = new Flipper\Activation\Context('some_dummy_context');
 $context->registerArgument(new Flipper\Activation\Argument\UserIdentifier('[email protected]');
-```php
+```
 
-## Set up your feature definitions
 
+## Set up your feature definitions
+```php
 $flipper = new Flipper(new InMemoryFeatureRepository());
 $flipper->addContext($this->context);