add azure-pipelines.yml

Author: Danny McCormick

azure-pipelines.yml

@@ -0,0 +1,16 @@
+steps:
+- task: NodeTool@0
+  inputs:
+    versionSpec: "8.x"
+  displayName: Install node 8
+
+# install dependencies
+- script: npm install
+  displayName: npm install
+
+# build
+- script: npm run build
+  displayName: npm run build
+
+- script: npm run units
+  displayName: Run unit tests