Try fixing the Sf 3 build

Author: wouterj

.travis.yml

@@ -17,21 +17,23 @@ cache:
 matrix:
   include:
     - php: 5.6
-      env: SYMFONY_VERSION="3.0.x-dev as 2.8.x-dev" DEPS=dev
+      env: DEPS=dev
     - php: 5.3
       env: COMPOSER_FLAGS="--prefer-lowest"
     - php: 5.6
       env: SYMFONY_VERSION=2.3.*
     - php: 5.6
       env: SYMFONY_VERSION=2.7.*
+    - php: 5.6
+      env: SYMFONY_VERSION="3.0.x-dev as 2.8.x-dev" 
   fast_finish: true
 
 before_install:
   - if [[ "$TRAVIS_PHP_VERSION" != "hhvm" ]]; then echo "memory_limit = -1" >> ~/.phpenv/versions/$(phpenv version-name)/etc/conf.d/travis.ini; fi
   - phpenv config-rm xdebug.ini || true
   - composer self-update
   - if [ "$DEPS" = "dev" ]; then perl -pi -e 's/^}$/,"minimum-stability":"dev"}/' composer.json; fi
-  - if [ "$SYMFONY_VERSION" != "" ]; then composer require symfony/symfony:${SYMFONY_VERSION} --no-update; fi
+  - if [ "$SYMFONY_VERSION" != "" ]; then composer require "symfony/symfony:$SYMFONY_VERSION" --no-update; fi
 
 install: composer update --prefer-dist $COMPOSER_FLAGS