add content to readme

README.md

@@ -1,2 +1,32 @@
 # dl-minetest
-Dylan's Minetest Mods
+
+Dylan's Minetest Mods - two small mods for Minetest
+
+
+RotDecay
+========
+
+This mod causes some placed blocks to rot or decay, transforming into another
+type of node or disappearing entirely. This forces survival players to
+"maintain" their buildings, and encourages them to build them out of
+sturdier, longer lasting (and harder to obtain) materials as they progress.
+The toughest materials (brick, forged stone, obsidian glass etc) will
+not decay.
+
+
+DLTweaks
+========
+
+This mod tweaks a variety of small things in the default game; makes this or
+that a little more realistic/harder/easier/more useful etc.
+
+Summary of changes:
+   - Wooden Axe/Pickaxe less effective & break faster for some realism.
+     (use them only at the start to get some stone to make better tools).
+   - Chopping trees with stone axe is now much faster than doing it
+     by hand.
+   - Tree blocks (regular and jungle) fall down like sand/gravel.
+   - 6 Dirt can be used to craft a clay lump.
+   - A tree or jungle tree can be smelted to create a (char)coal lump.
+   - More items can be used as fuel in the furnace (e.g. dry shrubs)
+   - Lava sources play fire sound [Somewhat buggy]