title: Promise rejection when I try to load fonts in expo
body: <p>I get a problem with Expo and react-native. When I try to <em>loadAsync</em> font from assets folder I get this error:</p>
  
  <blockquote>
    <p>[Unhandled Promise rejection: Error: Font not found /data/data/host.exp.exponent/cache/ExperienceData/.../ExponentAsset-5868d2d7f28da04ee373451e87d682f8.ttf]</p>
  </blockquote>
  
  <p>My code in App.js</p>
  
  <pre><code>import React, { Component } from "react";
  import { configureStore } from "./store.js";
  import { Provider } from "react-redux";
  import { AppLoading, Font } from 'expo';
  import MainWrapper from './components/mainWrapper'
  
  const store = configureStore();
  
  export default class App extends Component {
    state = {
      appReady: false
    }
    loadAssets = async () =&gt; {
      await Font.loadAsync({
        'Arial': require('./assets/fonts/Arial.ttf')
      });
      this.setState({appReady: true});
    }
    componentDidMount() {
      this.loadAssets()
    }
    render() {
      return (
        &lt;Provider store={store}&gt;
          {this.state.appReady ?
            &lt;MainWrapper /&gt;
          :
            &lt;AppLoading /&gt;
          }
        &lt;/Provider&gt;
      );
    }
  }
  </code></pre>
  
  <p>and I use </p>
  
  <pre><code>"expo": {
    "sdkVersion": "21.0.0"
  }
  </code></pre>
  
  <p>Most of my App.js I took from Expo example with some changes. Do you have any ideas how can I resolve this error?</p>