add travis

Author: otymko

.travis.yml

@@ -0,0 +1,18 @@
+language: java
+
+jdk:
+  - openjdk8
+
+addons:
+  sonarcloud: true
+
+git:
+  depth: false
+
+before_cache:
+  - rm -f  $HOME/.gradle/caches/modules-2/modules-2.lock
+  - rm -fr $HOME/.gradle/caches/*/plugin-resolution/
+cache:
+  directories:
+    - $HOME/.gradle/caches/
+    - $HOME/.gradle/wrapper/