add example config for led

lib/ledtask/platformio.ini

@@ -0,0 +1,15 @@
+[platformio]
+#if you want a pio run to only build
+#your special environments you can set this here
+#by uncommenting the next line
+#default_envs = testboard
+[env:nodemculed]
+board = nodemcu-32s
+lib_deps = ${env.lib_deps}
+build_flags = 
+	-D BOARD_HOMBERGER
+    -D GWLED_CODE=1
+    -D GWLED_PIN=33
+	${env.build_flags}
+upload_port = /dev/esp32
+upload_protocol = esptool