Start a howto for taking money

I find myself repeating this info over and over, and now I want to say
it to a bunch of translators (#189).

www/howto/take-money.spt

@@ -0,0 +1,40 @@
+nav_title = 'Take Money'
+[---]
+[---] text/html via markdown
+
+Thanks for collaborating on Gratipay! At some point during
+[onboarding](/big-picture/welcome) you should be invited to join our [weekly
+money distribution](https://gratipay.com/Gratipay/distributing/). If not, just
+ask! 💸 💃
+
+
+## How it Works
+
+All collaborators on the Gratipay project set their own take. When you're
+added, you'll be added at 1¢ per week. After that, only you can change
+your weekly take. Takes are distributed from smallest to largest each week.
+What should you take? Set your take to balance your own internal guilt and
+resentment. 😊
+
+If the rest of the group feels that you're taking too much, you'll hear from
+us, and we'll have a conversation together. No news is good news! If you think
+someone else is taking too much, here's what you can [do about
+it](/howto/deal-with-bad-behavior).
+
+Legally speaking, unless otherwise arranged, you are an independent contractor
+of Gratipay, LLC (an entity organized in Pennsylvania, U.S.A.). We report the
+money we pay to you to the appropriate tax authorities, based on your
+jurisdiction and the tax laws and treaties in place. If you have any questions,
+please ask on your [onboarding](/big-picture/welcome) ticket, or privately to
+[support@gratipay.com](mailto:support@gratipay.com).
+
+
+## What we Need From You
+
+In order to be added to the money distribution, you will need a Gratipay
+account with:
+
+1. a verified [email address](https://gratipay.com/about/me/emails),
+1. a [PayPal account](https://gratipay.com/about/me/routes/paypal) linked for
+ payouts, and
+1. a [national identity](https://gratipay.com/about/me/identities/) on file.