Setup initial Jenkins pipeline

Jenkinsfile

+pipeline {
+  agent any
+  stages {
+    stage('Test') {
+      steps {
+        sh 'py.test --junitxml results.xml test/'
+      }
+    }
+    stage('xUnit') {
+      steps {
+        junit 'results.xml'
+      }
+    }
+  }
+}
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