Added GitHub Actions Tests

.github/workflows/maven.yml

@@ -0,0 +1,21 @@
+name: Java CI
+
+on: [push]
+
+jobs:
+  build:
+    
+    runs-on: ${{ matrix.os }}
+    strategy:
+      matrix:
+        os: [ubuntu-latest, windows-latest, macOS-latest]
+        java: [1.8, 1.9]
+
+    steps:
+    - uses: actions/checkout@v1
+    - name: Set up JDK 1.8
+      uses: actions/setup-java@v1
+      with:
+        java-version: ${{ matrix.java }}
+    - name: Build with Maven
+      run: mvn package --file pom.xml