title: trying to use kafka-node with angular6 gives a zlib_bindings not found issue
body: <p>I am trying to use <code>kafka-node</code> npm package in an Angular-6 app. 
  As part of the initial <code>kafka-node</code> npm package installation i have installed <code>zlib</code> since it was showing as a dependency. 
  As part of running the application using <code>ng serve</code>, it gives the following error. </p>
  
  <pre><code>ERROR in ./node_modules/zlib/lib/zlib.js
  Module not found: Error: Can't resolve './zlib_bindings' in '*[local path removed]*\angkfkapp\node_modules\zlib\lib'
  ERROR in ./node_modules/node-zookeeper-client/lib/jute/index.js
  Module not found: Error: Can't resolve 'fs' in '*[local path removed ]*\angkfkapp\node_modules\node-zookeeper-client\lib\jute'
  ERROR in ./node_modules/buffermaker/test/BufferMaker.js
  Module not found: Error: Can't resolve 'should' in '*[local path removed ]*\angkfkapp\node_modules\buffermaker\test'
  </code></pre>