cleaned up file stuff in ExportLevel

code/in_out.lua

@@ -1,7 +1,9 @@
 function ExportLevel(levelname, filename)
-	os.execute( "mkdir \"./export\"" )
+	love.filesystem.createDirectory("export")
 	filename = filename or "output.lua"
-	filename = "export/"..filename
+	if string.sub(filename, 1, 1) ~= "/" then
+		filename = "export/"..filename
+	end
 	exportFile = io.open(filename, "w+")
 
 	if exportFile then