title: How to set default country flag when entering mobile number
body: <p>I'm trying to add default country flag(india) in my select box.
  I'm using Angular 4 international phone prefix input box. But I'm not getting how to set the default value. They shared the docs on github as </p>
  
  <p>@Input() locale
  An ISO 639-1 language code can be provided to set available language: es: Spanish, en: English</p>
  
  <p>@Input() defaultCountry
  An ISO 639-1 country code can be provided to set default country selected.</p>
  
  <p>I've tried this but it is not working.</p>
  
  <pre><code>&lt;int-phone-prefix formControlName="myPhone" [locale]="'hi'" [defaultCountry]="in"&gt; &lt;/int-phone-prefix&gt;
  </code></pre>
  
  <p>I'm using ng4-intl-phone package,
  Please help me sort this issue</p>