Add Azure Pipelines example

azure-pipelines.yml

@@ -0,0 +1,34 @@
+# Azure Pipelines configuration
+
+trigger:
+- master
+
+pool:
+  vmImage: 'ubuntu-latest'
+strategy:
+  matrix:
+    Python35:
+      python.version: '3.5'
+    Python36:
+      python.version: '3.6'
+    Python37:
+      python.version: '3.7'
+
+steps:
+- task: UsePythonVersion@0
+  inputs:
+    versionSpec: '$(python.version)'
+  displayName: 'Use Python $(python.version)'
+
+- script: |
+    python -m pip install --upgrade pip
+    pip install coverage
+  displayName: 'Install coverage'
+
+- script: |
+    coverage run tests.py
+  displayName: 'Run tests'
+
+- script: |
+    bash <(curl -s https://codecov.io/bash)
+  displayName: 'Upload to codecov.io'