Merge pull request #121 from dcrosta/azure-pipelines

adopt azure pipelines instead of travis

Author: dcrosta

.travis.yml

@@ -0,0 +1,37 @@
+jobs:
+- job: 'Style'
+  steps:
+  - task: UsePythonVersion@0
+    inputs:
+      versionSpec: '3.7'
+      architecture: 'x64'
+  - script: |
+      pip install tox
+      tox -e style
+    displayName: 'tox -e style'
+
+- job: 'Test'
+  pool:
+    vmImage: 'ubuntu-16.04'
+  strategy:
+    matrix:
+      Python27:
+        python.version: '2.7'
+      Python35:
+        python.version: '3.5'
+      Python36:
+        python.version: '3.6'
+      Python37:
+        python.version: '3.7'
+    maxParallel: 4
+
+  steps:
+  - task: UsePythonVersion@0
+    inputs:
+      versionSpec: '$(python.version)'
+      architecture: 'x64'
+
+  - script: |
+      pip install tox tox-docker
+      tox
+    displayName: 'tox'