Merge pull request #20 from alvarolb/patch-1

Update README.md

README.md

@@ -31,6 +31,7 @@ or Maven:
  android:layout_width="250dp"
  android:layout_height="250dp"
  android:src="@drawable/image"
+ app:border="true"
  app:border_color="#EEEEEE"
  app:border_width="4dp"
  app:shadow="true" />