title: Logout for GoogleApiClient in Android application
body: <p>Using such code it is possible to link my app and use account.</p>
  
  <pre><code>if (mGoogleApiClient == null) {
              mGoogleApiClient = new GoogleApiClient.Builder(this)
                      .addApi(Plus.API)
                      .addApi(Drive.API)
                      .addScope(Drive.SCOPE_FILE)
                      .addScope(Drive.SCOPE_APPFOLDER)
                      .addConnectionCallbacks(this)
                      .addOnConnectionFailedListener(this)
                      .build();
          }
          mGoogleApiClient.connect();
  </code></pre>
  
  <p>But is where any way to 'logout' from this account once activated or switch to a new one?</p>