login.html

<ion-view>
  <ion-content ng-controller="LoginController">
    <div style="height:25px"></div>
    <div class="item item-image ionic-logo">
      <img src="img/ionic.png">
    </div>
    <button class="button button-block button-calm sign-up" ng-click="oauthVenmo()">
      Login with Venmo
    </button>
  </ion-content>
</ion-view>