title: angular-wizard steps form validation for current step
body: <p><b> I have a form with angular-wizard steps like below </b>
      <p>
      While moving from one step  to another step, we have to validate the current
      step fields. But it validating all steps fields. How we can validate the present  step fields instead of all fields?
     </p></p>
  
  <pre><code>&lt;form name="User" novalidate&gt;
      &lt;wizard on-finish="saveUser()"&gt;
          &lt;wz-step title="Starting" canexit="exitValidation"&gt;
              &lt;h1&gt;This is the first step&lt;/h1&gt;
              &lt;input type="text" required name="Field1"/&gt;
              &lt;input type="submit" wz-next="" value="Continue" /&gt;
          &lt;/wz-step&gt;
          &lt;wz-step title="Continuing" canenter="enterValidation" canexit="exitValidation"&gt;
              &lt;h1&gt;This is the second step&lt;/h1&gt;
              &lt;input type="text" required name="Field2"/&gt;
              &lt;input type="submit" wz-next="" value="Continue" /&gt;
          &lt;/wz-step&gt;
          &lt;wz-step title="Continuing" canenter="enterValidation" canexit="exitValidation"&gt;
              &lt;h1&gt;This is the third step&lt;/h1&gt;
              &lt;input type="text" required name="Field3"/&gt;
              &lt;input type="submit" wz-next="" value="Continue" /&gt;
          &lt;/wz-step&gt;
      &lt;/wizard&gt;
  &lt;/form&gt;
  </code></pre>