title: @react-native-community/blur not working on expo?
body: <p>Im using Expo and im using <code>&lt;BlurView /&gt;</code> of <code>@react-native-community/blur</code> .. and it throws me an error of <code>Invariant Violation: requireNativeComponent: &quot;BlurView&quot; was not found in the UIManager.</code>. Does Expo not supporting <code>@react-native-community/blur</code>?</p>
  <p>expo version: <code>40.0.0</code>
  Emulator: Android</p>
  <p>other note:</p>
  <p>i did try <code>expo-blur</code> but it does not blur as what i expected to be.. so that's why im using <code>@react-native-community/blur</code>.</p>
  <p><div class="snippet" data-lang="js" data-hide="false" data-console="true" data-babel="false">
  <div class="snippet-code">
  <pre class="snippet-code-js lang-js prettyprint-override"><code>    &lt;ImageBackground source={background} style={styles.imageContainer}&gt;
        &lt;SafeAreaView style={styles.container}&gt;
          &lt;StatusBar backgroundColor={THEME.WHITE} barStyle='dark-content' /&gt;
          &lt;BlurView style={styles.formContainer}&gt;
            &lt;View style={{ marginBottom: 15 }}&gt;
              &lt;Input
                leftIcon={
                  &lt;Icon
                    color={THEME.GREY_6}
                    name='email'
                    type={ICON.MaterialCommunityIcons}
                    variant={VARIANT.MEDIUM}
                  /&gt;
                }
                placeholder='Email'
                onChangeText={(e) =&gt; onChangeEmail(e)}
              /&gt;
            &lt;/View&gt;
            &lt;View&gt;
              &lt;Input
                leftIcon={
                  &lt;Icon
                    color={THEME.GREY_6}
                    name='onepassword'
                    type={ICON.MaterialCommunityIcons}
                    variant={VARIANT.MEDIUM}
                  /&gt;
                }
                placeholder='Password'
                onChangeText={(e) =&gt; onChangeEmail(e)}
              /&gt;
            &lt;/View&gt;
            &lt;View style={styles.forgotPassContainer}&gt;
              &lt;Text style={styles.text}&gt;Forgot Password?&lt;/Text&gt;
            &lt;/View&gt;
            &lt;View style={styles.loginButton}&gt;
              &lt;Button label='Login' onPress={handleLogin} /&gt;
            &lt;/View&gt;
            &lt;View
              style={{
                padding: 15,
                alignItems: 'center',
                borderTopWidth: 0.2,
                marginTop: 15,
              }}
            &gt;
              &lt;Text style={styles.text}&gt;Sign Up&lt;/Text&gt;
            &lt;/View&gt;
          &lt;/BlurView&gt;
        &lt;/SafeAreaView&gt;
      &lt;/ImageBackground&gt;</code></pre>
  </div>
  </div>
  </p>
  <p>what im trying to achieve is making the <code>formContainer</code> blur its background.</p>