feat(notification): add confirmation_instructions and new_post

examples/blog/app/views/mailers/notification/password_reset.text.erb

@@ -0,0 +1,7 @@
+Reset your password
+
+Hi <%= user.email %>, someone (hopefully you) asked to reset your Prism Blog password.
+
+Choose a new password: <%= reset_url %>
+
+This link expires in 15 minutes. If you didn't request this, you can ignore this email.