Add an example of how to parallel builds on multiple nodes

Author: Owen Mehegan

pipeline-examples/parallel-multiple-nodes/ParallelMultipleNodes.groovy

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+def labels = ['precise', 'trusty'] // labels for Jenkins node types we will build on
+def builders = [:]
+for (x in labels) {
+    def label = x
+    builders[label] = {
+      node(label) {
+	// build steps that should happen on all nodes go here
+      }
+    }
+}
+
+parallel builders

pipeline-examples/parallel-multiple-nodes/README.md

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+# Synopsis
+
+This is a simple example showing how to succinctly parallel the same build across multiple Jenkins nodes. This is useful for e.g. building the same project on multiple OS platforms.