Travis: disable-tls for composer install on PHP-5.3.3

Author: marc-mabe

.travis.yml

@@ -11,6 +11,7 @@ php:
  - hhvm
 
 install:
+ - if [ "$TRAVIS_PHP_VERSION" = "5.3.3" ]; then composer config -g disable-tls true; fi
  - composer install -n --prefer-source
 
 before_script: