Update coveralls configuration.

Author: GhaziTriki

.travis.yml

@@ -34,6 +34,6 @@ script:
   - if [ "$TRAVIS_PHP_VERSION" == "nightly" ]; then phpunit; fi
 
 after_script:
-  - if [ "$TRAVIS_PHP_VERSION" == "7.0" ] || [ "$TRAVIS_PHP_VERSION" == "7.1" ] || [ "$TRAVIS_PHP_VERSION" == "7.2" ]; then php vendor/bin/coveralls -v; fi
+  - if [ "$TRAVIS_PHP_VERSION" == "7.0" ] || [ "$TRAVIS_PHP_VERSION" == "7.1" ] || [ "$TRAVIS_PHP_VERSION" == "7.2" ]; then php vendor/bin/php-coveralls -v; fi
   - if [ "$TRAVIS_PHP_VERSION" == "7.0" ] || [ "$TRAVIS_PHP_VERSION" == "7.1" ] || [ "$TRAVIS_PHP_VERSION" == "7.2" ]; then wget https://scrutinizer-ci.com/ocular.phar; fi
   - if [ "$TRAVIS_PHP_VERSION" == "7.0" ] || [ "$TRAVIS_PHP_VERSION" == "7.1" ] || [ "$TRAVIS_PHP_VERSION" == "7.2" ]; then php ocular.phar code-coverage:upload --format=php-clover build/logs/clover.xml; fi