v1.2.1

### Releases v1.2.1

1. Add functions to control Config Portal from software or Virtual Switches. Check [How to trigger a Config Portal from code #25](khoih-prog/Blynk_WM#25)
2. Add examples to demo the new Virtual ConfigPortal SW feature
3. Optimize code

Author: khoih-prog

CONTRIBUTING.md

@@ -29,7 +29,7 @@ Please ensure to specify the following:
 Arduino IDE version: 1.8.13
 ESP8266 Core Version 2.7.4
 OS: Ubuntu 20.04 LTS
-Linux Inspiron 5.4.0-54-generic #60-Ubuntu SMP Fri Nov 6 10:37:59 UTC 2020 x86_64 x86_64 x86_64 GNU/Linux
+Linux Inspiron 5.4.0-60-generic #67-Ubuntu SMP Tue Jan 5 18:31:36 UTC 2021 x86_64 x86_64 x86_64 GNU/Linux
 
 Context:
 The board couldn't autoreconnect to Local Blynk Server after router power recycling.