title: Assert text value of list of webelements using nightwatch.js
body: <p>I am new to using nightwatch.js.
  I want to get a list of elements and verify text value of each and every element with a given string.
  I have tried :</p>
  
  <pre><code>function iter(elems) {
        elems.value.forEach(function(element) {
          client.elementIdValue(element.ELEMENT)
        })
      };
      client.elements('css selector', 'button.my-button.to-iterate', iter);
  </code></pre>
  
  <p>For another stackoverflow question
  But what I am using right now is </p>
  
  <pre><code>waitForElementPresent('elementcss', 5000).assert.containsText('elementcss','Hello')
  </code></pre>
  
  <p>and it is returning me the output</p>
  
  <pre><code>Warn: WaitForElement found 5 elements for selector "elementcss". Only the first one will be checked.
  </code></pre>
  
  <p>So I want that it should verify text value of each and every element of list.</p>