add github pipeline

.github/workflows/continuous_integration.yml

@@ -0,0 +1,9 @@
+name: Continuous Integration
+on: push
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v1
+    - name: Test
+      run: ./gradlew clean test

.github/workflows/publish_on_jitpack.yml

@@ -0,0 +1,28 @@
+name: Publish on JitPack
+on:
+  push:
+    tags:
+      - '*'
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+    - name: Checkout
+      uses: actions/checkout@v1
+    - name: Test
+      run: ./gradlew clean test
+    - name: Create release
+      uses: actions/create-release@v1
+      env:
+        GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+      with:
+        tag_name: ${{ github.ref }}
+        release_name: ${{ github.ref }}
+        draft: false
+        prerelease: false
+    - name: Publish on JitPack
+      env:
+        GITHUB_REF: ${{ github.ref }}
+      run: |
+        echo "https://jitpack.io/api/builds/com.github.${{ github.repository }}/${GITHUB_REF##*/}"
+        curl "https://jitpack.io/api/builds/com.github.${{ github.repository }}/${GITHUB_REF##*/}"