Moving Azure, AppVeyor, and CircleCI minimal examples in docs also to their own file under examples/

examples/azure-pipelines-minimal.yml

@@ -0,0 +1,35 @@
+jobs:
+- job: linux
+  pool: {vmImage: 'Ubuntu-16.04'}
+  steps:
+    - task: UsePythonVersion@0
+    - bash: |
+        python -m pip install --upgrade pip
+        pip install cibuildwheel==1.1.0
+        cibuildwheel --output-dir wheelhouse .
+    - task: PublishBuildArtifacts@1
+      inputs: {pathtoPublish: 'wheelhouse'}
+
+- job: macos
+  pool: {vmImage: 'macOS-10.13'}
+  steps:
+    - task: UsePythonVersion@0
+    - bash: |
+        python -m pip install --upgrade pip
+        pip install cibuildwheel==1.1.0
+        cibuildwheel --output-dir wheelhouse .
+    - task: PublishBuildArtifacts@1
+      inputs: {pathtoPublish: 'wheelhouse'}
+
+- job: windows
+  pool: {vmImage: 'vs2017-win2016'}
+  steps:
+    - task: UsePythonVersion@0
+    - script: choco install vcpython27 -f -y
+      displayName: Install Visual C++ for Python 2.7
+    - bash: |
+        python -m pip install --upgrade pip
+        pip install cibuildwheel==1.1.0
+        cibuildwheel --output-dir wheelhouse .
+    - task: PublishBuildArtifacts@1
+      inputs: {pathtoPublish: 'wheelhouse'}