configure travis to use symfony 2.8

Christoph Singer · Christoph Singer · commit 8993c3676aff · 2016-03-18T21:11:19.000+01:00
diff --git a/.travis.yml b/.travis.yml
@@ -9,7 +9,7 @@ php:
 
 env:
   - SYMFONY_VERSION=2.3.*
-  - SYMFONY_VERSION=2.7.*
+  - SYMFONY_VERSION=2.8.*
 #  - SYMFONY_VERSION=dev-master
 
 before_script:
