FIXED : Error on Travis-CI with Composer on PHP 5.3.3

Author: Progi1984

.travis.yml

@@ -13,7 +13,7 @@ matrix:
 before_script:
   ## Composer
   - curl -s http://getcomposer.org/installer | php
-  - php composer.phar install
+  - php composer.phar install --prefer-source
   ## PHP_CodeSniffer
   - pyrus install pear/PHP_CodeSniffer
   - phpenv rehash