Fix typo.

Author: cmfcmf

.travis.yml

@@ -15,7 +15,7 @@ matrix:
 install:
   - composer install --dev
 
-script: phpunit ---coverage-text --coverage-clover=coverage.clover
+script: phpunit --coverage-text --coverage-clover=coverage.clover
 
 after_script:
     - wget https://scrutinizer-ci.com/ocular.phar