Rule 5 update. (#36)

This is a draft for some Rule 5 changes. Its here for management to look
at for easy comparison and shouldnt be merged yet.

The main changes are:

- Swaps around an example of exploiting that hasnt been seen in ages out
for an example that is sometimes still seen.

rules.md

@@ -257,7 +257,7 @@ Not Exploits:
 - A standard marine deconstructing a wall.
 
 Examples of Exploits:
-- A standard marine creating Ordnance Tech Grenades or Explosives.
+- Attaching C4 to a mob/object and moving that thing around to turn C4 into a mobile explosive.
 - An Ordnance Tech stacking multiple C4 on one entity or object.
 - A Specialist not selecting a kit, allowing them to use multiple existing kits.
 - Stacking mini turrets and M56Ds.