title: Cannot get jmeter-plugins to work
body: <p>I am a Jmeter/Java newbie and downloaded the ATLANTBH Jmeter pluginds and tried to use the JSON path extractor.. It just throws me this error </p>
  
  <pre><code>meter.threads.JMeterThread: Test failed! java.lang.NoClassDefFoundError: org/apache/commons/lang/Validate
  at com.jayway.jsonpath.JsonPath.read(JsonPath.java:313)
  at com.atlantbh.jmeter.plugins.jsonutils.jsonpathextractor.JSONPathExtractor.extractJSONPath(JSONPathExtractor.java:56)
  at com.atlantbh.jmeter.plugins.jsonutils.jsonpathextractor.JSONPathExtractor.process(JSONPathExtractor.java:80)
  at org.apache.jmeter.threads.JMeterThread.runPostProcessors(JMeterThread.java:737)
  at org.apache.jmeter.threads.JMeterThread.process_sampler(JMeterThread.java:439)
  at org.apache.jmeter.threads.JMeterThread.run(JMeterThread.java:257)
  at java.lang.Thread.run(Unknown Source)
  </code></pre>
  
  <p>Could any one explain what i might have done wrong?</p>