add sonarcloud

Author: Daniel Gomes

.travis.yml

@@ -1,5 +1,7 @@
 language: php
 
+dist: trusty
+
 php:
   - 7.1
   - 7.2
@@ -9,3 +11,10 @@ matrix:
 
 before_script:
   - composer install
+
+addons:
+  sonarcloud:
+    organization: "dcsg-github"
+
+script:
+  - sonar-scanner