Adding azure-pipelines.yml file to set up the build and a sample yml file to set up conda env on build machine

.ci/azure-pipelines.yml

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+
+# Pull request against these branches will trigger this build
+pr:
+- master
+- staging
+
+#Any commit to this branch will trigger the build.
+trigger:
+- staging
+- master
+
+pool:
+  vmImage: 'ubuntu-16.04'
+
+steps:
+
+- bash: |
+    echo "##vso[task.prependpath]/data/anaconda/bin"
+  displayName: Add Conda to PATH
+
+- bash: |
+    source deactivate nlp
+    conda remove -q -n nlp --all -y
+    conda env create -f environment.yml
+    conda env list  
+    source activate nlp
+  displayName: 'Build Configuration'
+
+- bash: |
+    source activate nlp
+    python -m ipykernel install --user --name nlp --display-name "nlp"
+    pytest --junitxml=junit/test-unitttest.xml #not running any tests for now
+  displayName: 'Run Unit tests'
+
+- task: PublishTestResults@2
+  inputs:
+    testResultsFiles: '**/test-unitttest.xml'
+    testRunTitle: 'Test results for PyTest'

environment.yml

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+# 
+# To create the conda environment:
+# $ conda env create -f environment.yml
+# 
+# To update the conda environment:
+# $ conda env update -f environment.yml
+# 
+# To register the conda environment in Jupyter:
+# $ conda activate nlp
+# $ python -m ipykernel install --user --name nlp
+# 
+name: nlp
+channels:
+- defaults
+- conda-forge
+dependencies:
+- python==3.6.8
+- ipykernel>=4.6.1
+- jupyter>=1.0.0
+- pytest>=3.6.4
+- pip:
+  - black>=18.6b4
+  - papermill>=0.15.0
+  - ipywebrtc
+  - pre-commit>=1.14.4