for high school students

Dependencies:   esp8266 mbed

Revision:
0:4c6832694c5e
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/esp8266.lib	Fri Sep 14 07:55:51 2018 +0000
@@ -0,0 +1,1 @@
+https://os.mbed.com/users/Dennis_Yu/code/esp8266/#08113511c9ab