> - There's a problem with your website's SSL certificate. You're using the *.github.com certificate with a custom domain.

Thanks. letsencrypt is coming.

> - Is there any way you can add a setting so the user can change the placement of the "done" button? Left side —> Right

Righty/lefty option is a nice feature. Adding to backlog.

> - A new redesigned icon, maybe :)?

(ಥ﹏ಥ)

> Sell this app ($1~3) or put a donation button somewhere.

Ooh. Nice to hear.