Document Gmail App password, since Less Secure Access is going away (#98

)

.gitignore

@@ -0,0 +1 @@
+.idea

README.md

@@ -58,14 +58,11 @@ Some features:
 
 ### Gmail
 
-Gmail security settings may cause this Action to fail. This failure may involve a message in the GitHub Actions details about access being denied and an email from Google to the email account being used about a sign-in being blocked and why.
+Instead of using your normal Google password, use an App password.
 
-Changes in Gmail settings may be necessary to get this action to work.
-1. Google treats this method of using email as a "Less Secure App". However, "Less Secure Apps" can be enabled in [Google profile settings](https://myaccount.google.com/lesssecureapps).
-2. IMAP needs to be enabled in Gmail settings as described [here](https://support.google.com/mail/answer/7126229?hl=en).
-3. If the Gmail account you're trying to use in this Action is already 2FA (Two Factor Authentication) enabled, the 2FA password will need to be provided as well, which isn't included in the default template.
-
-Users who have had problems have reported success by doing each of these three steps or by doing the first two steps and using a Gmail account that didn't have 2FA enabled.
+1. [Enable 2-Step Verification.](https://support.google.com/accounts/answer/185839?hl=en&co=GENIE.Platform%3DAndroid).
+This is needed to create an App password.
+2. [Create an App password](https://support.google.com/accounts/answer/185833?hl=en) for `Mail`.
 
 ### Unauthenticated login (username/password fields)