Add missing quotes, 'cause derp.

tests/scripts/travis_setup.sh

@@ -37,7 +37,7 @@ cd drupal-*
 drush si minimal --db-url=mysql://drupal:drupal@localhost/drupal --yes
 # Needs to make things from Composer be available (PHP CS, primarily)
 sudo chmod a+w sites/default/settings.php
-echo "include_once $HOME/.composer/vendor/autoload.php;" >> sites/default/settings.php
+echo "include_once '$HOME/.composer/vendor/autoload.php';" >> sites/default/settings.php
 sudo chmod a-w sites/default/settings.php
 drush runserver --php-cgi=$HOME/.phpenv/shims/php-cgi localhost:8081 &>/dev/null &
 ln -s $ISLANDORA_DIR sites/all/modules/islandora