Adding azure pipelines

Author: Danny McCormick

.gitattributes

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+# Make sure baseline files have consistent line endings
+*.txt text eol=lf

azure-pipelines-template.yml

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+steps:
+- task: NodeTool@0
+  inputs:
+    versionSpec: '8.9'
+  displayName: 'Install Node.js'
+
+- script: npm install
+  displayName: 'npm install'
+
+- script: npm install -g mocha
+  displayName: 'Install mocha'
+
+- script: npm install -g mocha-junit-reporter
+  displayName: 'Install mocha junit reporter'
+
+- script: npm run build
+  displayName: 'Build'
+
+- script: mocha tests/test.js --reporter mocha-junit-reporter
+  displayName: 'Test'
+
+- task: PublishTestResults@2
+  inputs:
+    testResultsFiles: '**/test-results.xml'    
+  condition: succeededOrFailed()

azure-pipelines.yml

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+trigger:
+- master
+- releases/*
+
+jobs:
+
+# All tasks on Linux
+- job: build_all_windows
+  displayName: Build all tasks (Windows)
+  pool:
+    vmImage: vs2017-win2016
+  steps:
+  - template: azure-pipelines-template.yml
+
+# All tasks on Linux
+- job: build_all_linux
+  displayName: Build all tasks (Linux)
+  pool:
+    vmImage: 'Ubuntu 16.04'
+  steps:
+  - template: azure-pipelines-template.yml
+
+# All tasks on macOS
+- job: build_all_darwin
+  displayName: Build all tasks (macOS)
+  pool:
+    vmImage: macos-10.13
+  steps:
+  - template: azure-pipelines-template.yml