allowed Twig 2.0

.travis.yml

@@ -8,6 +8,7 @@ cache:
 
 before_script:
     # symfony/*
+    - sh -c "if [ '$TWIG_VERSION' != '2.0' ]; then sed -i 's/~1.8|~2.0/~1.8/g' composer.json; composer update; fi"
     - sh -c "if [ '$SYMFONY_DEPS_VERSION' = '3.0' ]; then sed -i 's/~2\.3|3\.0\.\*/3.0.*@dev/g' composer.json; composer update; fi"
     - sh -c "if [ '$SYMFONY_DEPS_VERSION' = '2.8' ]; then sed -i 's/~2\.3|3\.0\.\*/2.8.*@dev/g' composer.json; composer update; fi"
     - sh -c "if [ '$SYMFONY_DEPS_VERSION' = '' ]; then sed -i 's/~2\.3|3\.0\.\*/2.7.*@dev/g' composer.json; composer update; fi"
@@ -21,6 +22,8 @@ matrix:
         - php: 5.3
         - php: 5.4
         - php: 5.5
+        - php: 5.6
+          env: TWIG_VERSION=2.0
         - php: 5.6
           env: SYMFONY_DEPS_VERSION=2.3
         - php: 5.6

composer.json

@@ -40,7 +40,7 @@
         "symfony/translation": "~2.3|3.0.*",
         "symfony/twig-bridge": "~2.3|3.0.*",
         "symfony/validator": "~2.3|3.0.*",
-        "twig/twig": "~1.8",
+        "twig/twig": "~1.8|~2.0",
         "doctrine/dbal": "~2.2",
         "swiftmailer/swiftmailer": "~5",
         "monolog/monolog": "^1.4.1"