Update mods/doors/init.lua

Fix door's glitch in creative mode
Fix duplicate in default
Update mods/default/init.lua

how did this line get there?
Merge pull request #119 from HybridDog/patch-1

Update mods/default/init.lua
makes wood doors craftable from wood group
Update README
Playing with fireworks.
Merge branch 'master' of https://github.com/minetest/minetest_game