Add .phpunit.result.cache to .gitignore

Author: dnaber-de

.gitignore

@@ -72,4 +72,4 @@ composer.lock
 # Commit your application's lock file https://getcomposer.org/doc/01-basic-usage.md#commit-your-composer-lock-file-to-version-control
 # You may choose to ignore a library lock file http://getcomposer.org/doc/02-libraries.md#lock-file
 # composer.lock
-
+.phpunit.result.cache