add a short description to new mark_all_mode
add a short description to new mark_all_mode

AlbertoBarrago/active_scaffold,budree/active_scaffold,mallikarjunayaddala/active_scaffold,mallikarjunayaddala/active_scaffold,activescaffold/active_scaffold,AlbertoBarrago/active_scaffold,budree/active_scaffold,budree/active_scaffold,mallikarjunayaddala/active_scaffold,activescaffold/active_scaffold,AlbertoBarrago/active_scaffold,activescaffold/active_scaffold