add initial azure pipelines definition

test macos build

.ci/ci.yml

@@ -0,0 +1,14 @@
+jobs:
+- job: macOS
+  displayName: macOS CI Tests
+
+  variables:
+    testRunTitle: '$(build.sourceBranchName)-macos'
+    testRunPlatform: macos
+
+  pool:
+    vmImage: xcode9-macos10.13
+
+  steps:
+  - template: ./macos-steps.yml
+

.ci/macos-steps.yml

@@ -0,0 +1,23 @@
+steps:
+- checkout: self
+  clean: true
+  fetchDepth: 5
+  submodules: true
+
+- bash: |
+    brew update
+    brew install cmake pkg-config arpack eigen glpk hdf5 json-c lapack lzo nlopt snappy xz
+  displayName: Install dependencies
+
+- task: CMake@1
+  displayName: Setup
+  inputs:
+    cmakeArgs: -DBUILD_EXAMPLES=OFF -DBUNDLE_JSON=OFF -DBUNDLE_NLOPT=OFF -DENABLE_TESTING=ON -DENABLE_COVERAGE=OFF -DBUILD_META_EXAMPLES=OFF ..
+
+- script: make -j4
+  displayName: Build
+  workingDirectory: build
+
+- script: ctest --output-on-failure -j 2
+  displayName: Test
+  workingDirectory: build

README.md

@@ -13,8 +13,7 @@ Cite Shogun:
 
 Develop branch build status:
 
-[![Build Status](https://travis-ci.org/shogun-toolbox/shogun.svg?branch=develop)](https://travis-ci.org/shogun-toolbox/shogun)
-[![Build status](https://ci.appveyor.com/api/projects/status/jx095rnr9qhg8dcv/branch/develop?svg=true)](https://ci.appveyor.com/project/vigsterkr/shogun/branch/develop)
+[![Build status](https://dev.azure.com/shogunml/shogun/_apis/build/status/shogun-CI)](https://dev.azure.com/shogunml/shogun/_build/latest?definitionId=-1)
 [![codecov](https://codecov.io/gh/shogun-toolbox/shogun/branch/develop/graph/badge.svg)](https://codecov.io/gh/shogun-toolbox/shogun)
 
 Donate to Shogun via NumFocus: