move some readme files in .dm sources into .md

code/ZAS/README.md

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+# Zone Air System
+
+This air system divides the station into impermeable areas called zones.
+
+When something happens, i.e. a door opening or a wall being taken down, zones equalize and eventually merge.
+
+Making an airtight area closes the connection again.
+
+## Control Flow
+
+**Every air tick**:
+
+- Marked turfs are updated with update_air_properties(), followed by post_update_air_properties().
+- Edges, including those generated by connections in the previous step, are processed. This is where gas is exchanged.
+- Fire is processed.
+- Marked zones have their air archived.
+
+## Important Functions
+
+**air_master.mark_for_update(turf)**
+- When stuff happens, call this. It works on everything. You basically don't need to worry about any other functions besides CanPass().
+
+## Notes for people who used ZAS before
+
+- There is no connected_zones anymore.
+
+- To get the zones that are connected to a zone, use this loop:
+
+```
+	for(var/connection_edge/zone/edge in zone.edges)
+		var/zone/connected_zone = edge.get_connected_zone(zone)
+```

code/ZAS/_docs.dm

@@ -1,28 +0,0 @@
-/*
-
-Zone Air System:
-
-This air system divides the station into impermeable areas called zones.
-When something happens, i.e. a door opening or a wall being taken down,
-zones equalize and eventually merge. Making an airtight area closes the connection again.
-
-Control Flow:
-Every air tick:
-	Marked turfs are updated with update_air_properties(), followed by post_update_air_properties().
-	Edges, including those generated by connections in the previous step, are processed. This is where gas is exchanged.
-	Fire is processed.
-	Marked zones have their air archived.
-
-Important Functions:
-
-air_master.mark_for_update(turf)
-	When stuff happens, call this. It works on everything. You basically don't need to worry about any other
-	functions besides CanPass().
-
-Notes for people who used ZAS before:
-	There is no connected_zones anymore.
-	To get the zones that are connected to a zone, use this loop:
-	for(var/connection_edge/zone/edge in zone.edges)
-		var/zone/connected_zone = edge.get_connected_zone(zone)
-
-*/