Try to rely on prefer-lowest

Author: ddeboer

.travis.yml

@@ -23,7 +23,7 @@ branches:
 before_install:
  - if [[ "$TRAVIS_PHP_VERSION" == "5.4" || "$TRAVIS_PHP_VERSION" == "hhvm" ]]; then composer remove "php-http/guzzle6-adapter" --dev --no-update; fi
  - if [[ "$TRAVIS_PHP_VERSION" == "5.4" || "$TRAVIS_PHP_VERSION" == "hhvm" ]]; then composer require "php-http/guzzle5-adapter" --dev --no-update; fi
- - if [ "$SYMFONY_VERSION" == "2.3.*" ]; then composer require --dev --no-update symfony/http-kernel:${SYMFONY_VERSION} symfony/process:${SYMFONY_VERSION}; fi
+# - if [ "$SYMFONY_VERSION" == "2.3.*" ]; then composer require --dev --no-update symfony/http-kernel:${SYMFONY_VERSION} symfony/process:${SYMFONY_VERSION}; fi
 
 install:
  - composer update $COMPOSER_FLAGS --prefer-source --no-interaction