Test against Symfony 2.8

Author: ddeboer

.travis.yml

@@ -4,6 +4,7 @@ php:
   - 5.3
   - 5.4
   - 5.5
+  - 5.6
   - 7.0
   - hhvm
 
@@ -18,23 +19,27 @@ matrix:
       env:
         - PHPUNIT_FLAGS="--coverage-clover=coverage.clover"
         - COVERAGE=true
-    - php: 5.5
+    - php: 5.6
       env: SYMFONY_VERSION='2.3.*'
-    - php: 5.5
+    - php: 5.6
       env:
         - SYMFONY_VERSION='2.4.*'
         - FRAMEWORK_EXTRA_VERSION='~3.0'
-    - php: 5.5
+    - php: 5.6
       env:
         - SYMFONY_VERSION='2.5.*'
         - FRAMEWORK_EXTRA_VERSION='~3.0'
-    - php: 5.5
+    - php: 5.6
       env:
         - SYMFONY_VERSION='2.6.*'
         - FRAMEWORK_EXTRA_VERSION='~3.0'
-    - php: 5.5
+    - php: 5.6
+      env:
+        - SYMFONY_VERSION='2.7.*'
+        - FRAMEWORK_EXTRA_VERSION='~3.0'
+    - php: 5.6
       env:
-        - SYMFONY_VERSION='2.7.*@dev'
+        - SYMFONY_VERSION='2.8.*@dev'
         - FRAMEWORK_EXTRA_VERSION='~3.0'
 
 before_script: