Added workflow config for builds on PR

Closes gh-16

.github/workflows/continuous-integration-workflow.yml

@@ -81,4 +81,4 @@ jobs:
         with:
           java-version: 8
       - name: Deploy Schema
-        run: echo Deploying Schema
+        run: echo Deploying Schema

.github/workflows/pr-build-workflow.yml

@@ -0,0 +1,24 @@
+name: PR build
+
+on:
+  pull_request:
+    branches:
+      - master
+
+jobs:
+  build:
+    name: Build
+    runs-on: ${{ matrix.os }}
+    strategy:
+      matrix:
+        os: [ubuntu-latest, macos-latest, windows-latest]
+        jdk: [8,9,10,11,12,14]
+      fail-fast: false
+    steps:
+      - uses: actions/checkout@v2
+      - name: Set up JDK ${{ matrix.jdk }}
+        uses: actions/setup-java@v1
+        with:
+          java-version: ${{ matrix.jdk }}
+      - name: Build with Gradle
+        run: ./gradlew clean build