Make require statement easy to copy (#71)

Author: loevgaard

README.md

@@ -16,7 +16,7 @@ will give you a good base for testing a Symfony bundle.
 Via Composer
 
 ``` bash
-$ composer require --dev nyholm/symfony-bundle-test
+composer require --dev nyholm/symfony-bundle-test
 ```
 
 ## Write a test