Merge pull request #3 from tfe2012/symfony_up_to_2.6_version

up symfony version to 2.6

Author: trylika

.travis.yml

@@ -4,7 +4,7 @@ php:
   - 5.5
   - 5.6
 env:
-  - SYMFONY="2.3.*"
+  - SYMFONY="2.6.*"
 install:
   - sudo pip install -q sphinx --use-mirrors
   - wget -q -O conf.py https://raw.githubusercontent.com/ongr-io/docs-aggregator/master/source/conf-travis.py

composer.json

@@ -13,7 +13,7 @@
     ],
     "require": {
         "php": ">=5.4",
-        "symfony/symfony": "~2.3",
+        "symfony/symfony": "~2.6",
         "symfony/assetic-bundle": "~2.3",
         "cocur/slugify": "0.2.2",
         "symfony/monolog-bundle": "~2.4",