fixes #75

android/src/main/java/fr/greweb/reactnativeviewshot/ViewShot.java

 import javax.annotation.Nullable;
 
 import android.app.Activity;
+import android.content.Intent;
 import android.graphics.Bitmap;
 import android.graphics.Canvas;
 import android.net.Uri;
 import android.widget.ScrollView;
 
 import com.facebook.react.bridge.Promise;
+import com.facebook.react.bridge.ReactApplicationContext;
 import com.facebook.react.uimanager.NativeViewHierarchyManager;
 import com.facebook.react.uimanager.UIBlock;