fix tableless create/update for rails 4.0.6, 4.1.2
fix tableless create/update for rails 4.0.6, 4.1.2

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