message: doc(Node.js): Limit example code to the most relevant section
diff: @@ -29,22 +29,7 @@ Next, call functions like [itk/readImageLocalFile](../api/node.html) or [itk/wri
  For example,
  ```js
  -#!/usr/bin/env node
  -
  -const program = require('commander')
  -
  -const readImageLocalFile = require('itk/readImageLocalFile')
  -const writeImageLocalFile = require('itk/writeImageLocalFile')
  -
  -program
  - .description('Convert images files from one format to another.')
  - .arguments('<inputFile> <outputFile>')
  - .parse(process.argv)
  -
  -if (program.args.length < 2) {
  - console.error('Please pass in both the input and output image file paths.')
  - process.exit(1)
  -}
  +[...]
  const inputFile = program.args[0]
  const outputFile = program.args[1]
  