Set up CI with Azure Pipelines

[skip ci]

azure-pipelines.yml

@@ -0,0 +1,20 @@
+# Android
+# Build your Android project with Gradle.
+# Add steps that test, sign, and distribute the APK, save build artifacts, and more:
+# https://docs.microsoft.com/azure/devops/pipelines/languages/android
+
+trigger:
+- master
+
+pool:
+  vmImage: 'macos-latest'
+
+steps:
+- task: Gradle@2
+  inputs:
+    workingDirectory: ''
+    gradleWrapperFile: 'gradlew'
+    gradleOptions: '-Xmx3072m'
+    publishJUnitResults: false
+    testResultsFiles: '**/TEST-*.xml'
+    tasks: 'assembleDebug'