Associate NodeMCU component with footprint.

2018-schematic/library/nodemcu.lib

@@ -6,7 +6,7 @@ EESchema-LIBRARY Version 2.3
 DEF NODEMCU U 0 40 Y Y 1 F N
 F0 "U" 0 200 60 H V C CNN
 F1 "NODEMCU" 0 -200 60 H V C CNN
-F2 "" -950 900 60 H I C CNN
+F2 "nodemcu:NodeMCU" -950 900 60 H I C CNN
 F3 "" -950 900 60 H I C CNN
 DRAW
 S 400 800 -400 -850 0 1 0 N