Merge pull request #892 from Bnyro/master

new screenshots for the readme

app/src/main/res/layout/chapter_column.xml

@@ -3,6 +3,7 @@
     xmlns:app="http://schemas.android.com/apk/res-auto"
     android:layout_width="wrap_content"
     android:layout_height="match_parent"
+    xmlns:tools="http://schemas.android.com/tools"
     android:background="?attr/selectableItemBackground"
     android:backgroundTint="@android:color/transparent"
     app:strokeWidth="0dp">