Merge pull request #130 from DonCallisto/patch-2

Update .travis.yml

Author: sroze

.travis.yml

@@ -16,6 +16,7 @@ matrix:
   include:
     - php: 5.3
       env: SYMFONY_VERSION='2.3.*'
+      dist: precise
     - php: 5.5
       env: SYMFONY_VERSION='2.7.*'
     - php: 5.6