DOC Add ssh config file

Author: mike-wendt

README.md

@@ -55,6 +55,7 @@ to manage.
 
 ### SSH
 
+- Config file - [.ssh/config](ssh/config)
 - [Prevent SSH Timeout](ssh/prevent-ssh-timeout.md)
 - [Using GIT+SSH over HTTPS](https://help.github.com/en/github/authenticating-to-github/using-ssh-over-the-https-port)
 

ssh/config

@@ -0,0 +1,13 @@
+# Prevent session timeout
+ServerAliveInterval 30
+
+# Setup mac ssh keys; `UseKeychain` is only on macOS
+Host *
+  AddKeysToAgent yes
+  UseKeychain yes
+  IdentityFile ~/.ssh/id_rsa
+
+# Use HTTPS instead of SSH for git+ssh
+Host github.com
+  Hostname ssh.github.com
+  Port 443