Send email via Sendgrid on win

[jpchip]

I think the next think I'm going to do is update it to send an email on a win. I think the easiest way to do to this is to use send grid. Anyone can sign up for a free account, so I can allow setting the SENDGRID_API_KEY in the .env file, and if it exists, use sendgrid to shoot off an email to the email address used to log in when an entry wins.

I know I could use nodemailer, but then I'd have to ask for user's to put a bunch of stuff in .env, seems like a pain all around.

I really want to make it easier to not miss wins, so this will be my next priority.

Originally posted by @jpchip in #32 (comment)

[jpchip]

As requested, allow specify additional emails to be cc'ed.

[jpchip]

@famewolf Latest release supports this, and supports a cc email.

[famewolf]

I guess now I need to ask if the send email feature can handle if the internet is down when it first attempts to send the email? Will it retry after x minutes upon failure?