Setup Actions test

.github/workflows/gradle.yml

@@ -0,0 +1,24 @@
+name: Java CI
+
+on:
+  push:
+    branches:
+    - breaking
+    - master
+  pull_request:
+    branches:
+    - breaking
+    - master
+ 
+jobs:
+  test:
+    runs-on: ubuntu-18.04
+
+    steps:
+    - uses: actions/checkout@v1
+    - name: Set up JDK 1.8
+      uses: actions/setup-java@v1
+      with:
+        java-version: 1.8
+    - name: Test with Gradle
+      run: ./gradlew clean build