Add rules to Large Moves strategy documentation

strategies/large-moves/README.md

@@ -4,4 +4,16 @@ The idea for these strategies comes from chapter 7 of [*How Markets Really Work*
 
 As with most of the strategies from this book, they are meant to illustrate certain characteristics of the market rather than be traded directly.
 
+## Rules
+
+### Large Moves Up
+
+1. When the asset (e.g., SPY) **rises** by 1% or more, enter a long trade.
+2. Exit the trade after 5 trading days (~1 week).
+
+### Large Moves Down
+
+1. When the asset (e.g., SPY) **falls** by 1% or more, enter a long trade.
+2. Exit the trade after 5 trading days (~1 week).
+
 ---