E-mail is not Login

[Wojtus11]

I login to Luxmed portal using a Client ID, not e-mail.
If I enter my e-mail in the YAML configuration, LuxmedSniper says "Successfully logged in!" but later on throws unexpected error on Appointments check, which is very confusing.

If I enter my Client ID as email in YAML configuration, all works well, so no code change is required.

Suggested fix: change configuration field name from "email" to "login".

[pbuchman]

Even on the website it says login - the way users log in may vary