Added coveralls to travis.ci file

Author: danitome24

.travis.yml

@@ -5,8 +5,11 @@ php:
 
 before_script:
   - curl -s http://getcomposer.org/installer | php
-  - php composer.phar install
+  - php composer.phar install --dev
 
 script:
-  - php vendor/bin/phpunit
+  - mkdir -p build/logs
+  - php vendor/bin/phpunit --coverage-clover build/logs/clover.xml
 
+after_script:
+ - php vendor/bin/coveralls -v

composer.json

@@ -23,6 +23,7 @@
     "php": ">=7"
   },
   "require-dev": {
-    "phpunit/phpunit": "^6.2"
+    "phpunit/phpunit": "^6.2",
+    "satooshi/php-coveralls": "^1.0"
   }
 }