Add github action to publish artifacts after a release

.github/workflows/publish.yml

@@ -0,0 +1,25 @@
+name: Publish Artifacts
+
+on:
+  release:
+    types: [published, created, edited]
+
+jobs:
+  build:
+
+    runs-on: ubuntu-latest
+
+    steps:
+    - uses: actions/checkout@v2
+    - name: Set up JDK 1.8
+      uses: actions/setup-java@v1
+      with:
+        java-version: 1.8
+    - name: Grant execute permission for gradlew
+      run: chmod +x gradlew
+    - name: Build with Gradle
+      run: ./gradlew app:bintrayUpload client:bintrayUpload
+      env:
+        RELEASE_VERSION : ${{ github.github_ref }}
+        BINTRAY_USER : ${{ secrets.BINTRAY_USER }}
+        BINTRARY_KEY : ${{ secrets.BINTRAY_KEY }}

api/build.gradle

@@ -8,7 +8,7 @@ dependencies {
 }
 
 ext {
-    libraryVersion = '0.2.0'
+    libraryVersion = System.getenv("RELEASE_VERSION")
 }
 
 version = libraryVersion

client/build.gradle

@@ -10,7 +10,7 @@ dependencies {
 }
 
 ext {
-    libraryVersion = '0.2.0'
+    libraryVersion = System.getenv("RELEASE_VERSION")
 }
 
 version = libraryVersion