Add training workflow, datasets, and runbook

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+Smileys and Frowns
+The trade examples in this chapter have all involved just two components:
+calls and stock. We will explore delta-neutral strategies in other chapters
+that involve more moving parts. Regardless of the specific makeup of the
+position, the P&(L) of each individual leg is not of concern. It is the
+profitability of the position as a whole that matters. For example, after a
+volatile move in a stock occurs, a positive-gamma trader like Harry doesn’t
+care whether the calls or the stock made the profit on the move. The trader
+would monitor the net delta that was produced—positive or negative—and
+cover accordingly. The process is the same for a negative-gamma trader. In
+either case, it is gamma and delta that need to be monitored closely.
+Gamma can make or break a trade. P&(L) diagrams are helpful tools that
+offer a visual representation of the effect of gamma on a position. Many
+option-trading software applications offer P&(L) graphing applications to
+study the payoff of a position with the days to expiration as an adjustable
+variable to study the same trade over time.
+P&(L) diagrams for these delta-neutral positions before the options’
+expiration generally take one of two shapes: a smiley or a frown. The shape
+of the graph depends on whether the position gamma is positive or negative.
+Exhibit 13.3 shows a typical positive-gamma trade.