message: return from evaluate conditional
diff: @@ -824,6 +824,10 @@ function Botkit(configuration) {
  if (message.conditional) {
  this.evaluateCondition(message.conditional);
  + // we want to stop processing this message
  + // because evaluate conditional can process a bunch of stuff
  + // and then move on to the next step internally
  + return;
  } else {
  if (message.handler) {
  