Inverted Mode (#5)

Merging in Cassidoxa's inverted mode.

I've still not fully reviewed the logic used in this mode, so it should be considered experimental, pending an in depth review by either myself or AA.

README.md

@@ -43,6 +43,16 @@ Special notes:
 - The magic barrier to Hyrule Castle Tower can be broken with a Hammer.
 - The Hammer can be used to activate the Ether and Bombos tablets.
 
+### Inverted
+
+This mode is similar to Open but requires the Moon Pearl in order to not transform into a bunny in the Light World and the Sanctuary spawn point is moved to the Dark Sanctuary
+
+Special Notes:
+
+- Link's House is shuffled freely. The Dark Sanctuary is shuffled within West Dark World.
+- There are a number of overworld changes to account for the inability to mirror from the Light World to the Dark World.
+- Legacy shuffles are not implemente for this mode.
+
 ## Game Logic
 This determines the Item Requirements for each location.
 
@@ -336,7 +346,7 @@ Output a Spoiler File (default: False)
 Select the game logic (default: noglitches)
 
 ```
---mode [{standard,open,swordless}]
+--mode [{standard,open,swordless,inverted}]
 ```
 
 Select the game mode. (default: open)