Added sonarcloud.

.travis.yml

@@ -3,6 +3,10 @@ language: java
 jdk:
   - oraclejdk8
 
+addons:
+  sonarcloud:
+    organization: "ethauvin-github"
+
 before_cache:
   - rm -f  $HOME/.gradle/caches/modules-2/modules-2.lock
   - rm -fr $HOME/.gradle/caches/*/plugin-resolution/
@@ -17,3 +21,9 @@ cache:
   directories:
     - $HOME/.gradle/caches/
     - $HOME/.gradle/wrapper/
+
+after_success:
+  - |
+      if [ "${TRAVIS_TEST_RESULT}" == 0 ]; then
+        ./gradlew sonarqube
+      fi