title: No provider for CallNumber in ionic 3
body: <p>I am using ionic 3, I want to call a number and for that I have added ionic native plugin for call-number:</p>
  
  <pre><code>ionic cordova plugin add call-number
  npm install --save @ionic-native/call-number
  </code></pre>
  
  <p>But it's throwing an error:</p>
  
  <blockquote>
    <p>ERROR Error: Uncaught (in promise): Error: No provider for CallNumber!</p>
  </blockquote>