Dune Burner: add description

data/core/units/dunefolk/Burner.cfg

@@ -14,7 +14,7 @@
     advances_to=Dune Scorcher
     cost=17
     usage=archer
-    description= _ "Utilizing various resources found in the Dunefolk domain, a highly flammable substance can be made. The Burners are those charged with making and carrying this dangerous mixture into battle. While the use of fire in warfare is not a novel concept, the effectiveness of their work is."
+    description= _ "An oft forgotten hazard of traversing the desert is the freezing cold that descends upon the sands during the night. To combat this, the Dunefolk typically make use of the highly flammable sap of the Sanbaar tree, which burns slowly and gently in small quantities. In larger amounts, however, Sanbaar sap burns violently, becoming nearly combustible if even a small bucket is lit aflame. The Dunefolk quickly realized the applicability of such a substance to warfare and regularly employ flaming projectiles to sow chaos among their enemies."
     die_sound={SOUND_LIST:HUMAN_DIE}
     {DEFENSE_ANIM "units/dunefolk/burner.png" "units/dunefolk/burner.png" {SOUND_LIST:HUMAN_HIT} }