add wemos d1 to reference.md

wemos · wemos · commit 25eb1bd46e82 · 2015-11-15T15:43:11.000+08:00
diff --git a/doc/reference.md b/doc/reference.md
@@ -167,6 +167,7 @@ NodeMCU 1.0    | 4M | 1M, 3M
 Olimex MOD-WIFI-ESP8266(-DEV)| 2M | 1M
 SparkFun Thing | 512k | 64k
 SweetPea ESP-210 | 4M | 1M, 3M
+WeMos D1 & D1 mini | 4M | 1M, 3M
 
 **Note:** to use any of file system functions in the sketch, add the following include to the sketch:
 
