Add new line

README.md

@@ -3,7 +3,11 @@ An innovative fast SSH/Telnet/Serial/Shell client.
 
 _Hello WindTerm :rose:, hello world!_
 
-**We're just beginning!**
+**We're just beginning! If you want a high performance text editor, you can try [WindEdit](https://www.github.com/kingToolbox/DIGEdit/).**
+
+# Introduction
+
+See [Intro Videos](https://kingtoolbox.github.io)
 
 # Roadmap
 
@@ -19,7 +23,6 @@ _Hello WindTerm :rose:, hello world!_
 - Auto login with public key
 - Authentication: public-key, gssapi-with-mic
 - Cmd, powershell on windows 7, wsl on windows 10
-- Keep alive
 
 **Todo list:**
 - Protocols:
@@ -256,3 +259,5 @@ DIGEdit is the text component of WindTerm.
 
 # License
 Completely FREE for personal, schools and students use without limitations.
+
+For testing in commercial environment, only short-term testing within 30 days is allowed. Not allowed if more than 30 days.