Added a sleep function

Tree_Farm/farmtree.lua

@@ -12,7 +12,9 @@ if not fs.exists('choptree.lua') then
 end
 
 while true do
-   -- Check if turtle has enough fuel
+    -- First of all, wait a few minutes
+    os.sleep(300)
+    -- Check if turtle has enough fuel
     if turtle.getFuelLevel() < (2 * (3 * NUM_OF_TREES)) then
 	hare.selectItem('minecraft:' .. TREE_SAPLING .. 'log')
 	turtle.refuel(2)