Update knapsack_pro 3.3.0
Update knapsack_pro 3.3.0

KnapsackPro/rails-app-with-knapsack_pro,KnapsackPro/rails-app-with-knapsack_pro,KnapsackPro/rails-app-with-knapsack_pro,KnapsackPro/rails-app-with-knapsack_pro