Remove whitespace to make more compliant with PSR2

To make the file more compliant with PSR2 then I'm removing the whitespace found at the end of the lines

Author: maxbaldanza

behat/symfony2-extension/2.1/features/bootstrap/FeatureContext.php

@@ -6,9 +6,9 @@
 use Symfony\Component\HttpKernel\KernelInterface;
 
 /**
- * This context class contains the definitions of the steps used by the demo 
+ * This context class contains the definitions of the steps used by the demo
  * feature file. Learn how to get started with Behat and BDD on Behat's website.
- * 
+ *
  * @see http://behat.org/en/latest/quick_start.html
  */
 class FeatureContext implements Context