Resolve "Make gitlab run PHPunit tests"

Closes #16

.gitlab-ci.yml

@@ -24,7 +24,7 @@ unit_tests:
   before_script:
   - apt-get update -yqq
   - apt-get install -y git zip
-  - RUN curl -sS https://getcomposer.org/installer | php -- --install-dir=/usr/local/bin --filename=composer
+  - curl -sS https://getcomposer.org/installer | php -- --install-dir=/usr/local/bin --filename=composer
   - composer install
   script:
   - phpunit tests/*.php