added doctrine/cache dependency

Author: mkusher

composer.json

@@ -18,7 +18,8 @@
         "mnapoli/php-di": "~4.4",
         "react/react": "0.4.*",
         "phpdocumentor/reflection-docblock": "~2.0",
-        "symfony/event-dispatcher": "^2.6"
+        "symfony/event-dispatcher": "^2.6",
+        "doctrine/cache": "^1.4"
     },
     "require-dev": {
         "behat/behat": "~3.0",