title: Can not find symbol Finder
body: <p>I set up ButterKnife into Android Studio.</p>
  
  <p>project build.gradle:</p>
  
  <pre><code>dependencies {
      classpath 'com.android.tools.build:gradle:2.2.1'
      classpath 'com.neenbedankt.gradle.plugins:android-apt:1.8'
  </code></pre>
  
  <p>app build.gradle:</p>
  
  <pre><code>apply plugin: 'com.android.application'
  apply plugin: 'android-apt'
  ...
      buildTypes {
          release {
              minifyEnabled false
              proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
          }
      }
  ...
      compile 'com.jakewharton:butterknife:8.4.0'
      apt 'com.jakewharton:butterknife-compiler:8.0.1'
  </code></pre>
  
  <p>And I have this:</p>
  
  <blockquote>
    <p>Error:(6, 28) error: cannot find symbol class Finder
    in
    ..\DetailActivity$$ViewBinder.java</p>
  </blockquote>
  
  <p>I am trying:</p>
  
  <pre><code>public class DetailActivity extends AppCompatActivity {
      @BindView(R.id.title_textview) TextView titleTextView;
  
      @Override
      protected void onCreate(Bundle savedInstanceState) {
          super.onCreate(savedInstanceState);
          setContentView(R.layout.activity_detail);
          ButterKnife.bind(this);
  ...
          titleTextView.setText(movie.getTitle());
  </code></pre>