Added readable books to the mod

Book.lua

@@ -0,0 +1,14 @@
+local function showBookFormspec(name, story)
+	return "size[5,9]label[0,0;"..name.."]label[0,1;"..story.."]"
+end
+for name,story in pairs(adventures.registered_books) do
+	local nam = "adventures:book_"..name
+	minetest.register_tool(nam, {
+		description = name,
+		inventory_image = "default_book.png",
+		stack_max = 1,
+		on_use = function(itemstack, user, pointed_thing)
+			minetest.show_formspec(user:get_player_name(), nam, showBookFormspec(name, story))
+		end,
+	})
+end