/subscribe to newsletter + slack

[shushugah]

Bonus: subscribe once, to both platforms, without visiting external pages

• A subscribe.markdown file which has info about these two pages

url: https://rails-girls-berlin.herokuapp.com/
text: Request to join our Code Curious Slack

text: Sign up to our newsletter
url: https://tumblr.us5.list-manage.com/subscribe?u=5f40ba1ddff89e54df3293bd3&id=75e77ff678

• /Subscribe in the header bar