Merge pull request #50 from php-http/Symfony3

Do not allow failures on Symfony 3.0

Author: Nyholm

.travis.yml

@@ -28,7 +28,6 @@ matrix:
     fast_finish: true
     allow_failures:
         - php: hhvm
-        - env: SYMFONY_VERSION=3.0.*
         - php: 5.5
           env: COMPOSER_FLAGS="--prefer-stable --prefer-lowest" COVERAGE=true TEST_COMMAND="composer test-ci" SYMFONY_VERSION=2.7.*