Prompt.features should be optional param.
Prompt.features should be optional param.

stevengum97/BotBuilder,msft-shahins/BotBuilder,yakumo/BotBuilder,stevengum97/BotBuilder,yakumo/BotBuilder,msft-shahins/BotBuilder,msft-shahins/BotBuilder,yakumo/BotBuilder,yakumo/BotBuilder,stevengum97/BotBuilder,stevengum97/BotBuilder,msft-shahins/BotBuilder