The rules for Invasion Defense.
Clarified and expanded several rules - no actual changes in rules, just better explanations. Some of these include:
* The Invader deck row is also Long Range.
* The boxes on the left/right side of an action card are just so you can fan the cards in either direction and don't correspond to the actions on the left/right side.
* Invasion cards are discarded into the command card discard pile.
* You can't play more Shields than the damage you are taking.
Added a Card Clarifications section to clarify some possible confusing issues.