update luacheck and add badge

.github/workflows/luacheck.yml

@@ -1,14 +1,10 @@
 name: luacheck
-
 on: [push, pull_request]
-
 jobs:
   build:
-
     runs-on: ubuntu-latest
-
     steps:
-    - uses: actions/checkout@v1
+    - uses: actions/checkout@master
     - name: apt
       run: sudo apt-get install -y luarocks
     - name: luacheck install

.luacheckrc

@@ -1,5 +1,4 @@
 unused_args = false
-allow_defined_top = true
 
 globals = {
 	"telemosaic"
@@ -8,12 +7,10 @@ globals = {
 read_globals = {
 	-- Stdlib
 	string = {fields = {"split"}},
-	table = {fields = {"copy", "getn"}},
 
 	-- Minetest
 	"minetest",
 	"vector", "ItemStack",
-	"dump",
 
 	-- Deps
 	"default",

README.md

@@ -1,5 +1,6 @@
-Telemosaic [telemosaic]
+# Telemosaic [telemosaic]
-=======================
+
+[![luacheck](https://github.com/mt-mods/telemosaic/workflows/luacheck/badge.svg)](https://github.com/mt-mods/telemosaic/actions)
 
 A Minetest mod for user-generated teleportation pads.
 

teleport.lua

@@ -217,7 +217,7 @@ local telemosaic_digiline_switching = {
 }
 
 -- teleports the player with given telemosaic pos
-function do_teleport(pos, player)
+local function do_teleport(pos, player)
 
 	-- prevent teleport spamming
 	local player_name = player:get_player_name()