Moved readme files to own folder

readme/donate.md

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+# Support Joplin development
+
+Donations to Joplin support the development of the project. Developing quality applications mostly takes time, but there are also some expenses, such as digital certificates to sign the applications, app store fees, hosting, etc. Most of all your donation will make it possible to keep up the current development standard.
+
+There are various ways to send a donation:
+
+## Paypal
+
+<a href="https://www.paypal.com/cgi-bin/webscr?cmd=_donations&business=E8JMYD2LQ8MMA&lc=GB&item_name=Joplin+Development&currency_code=EUR&bn=PP%2dDonationsBF%3abtn_donateCC_LG%2egif%3aNonHosted"><img src="https://raw.githubusercontent.com/laurent22/joplin/master/docs/images/PayPalDonate.png" height="60px"/></a>
+
+## Bitcoin
+
+<a href="bitcoin:1P8TJvvJ7oHGneWuwSXN3DMBd7gYxCUQjc?message=Joplin%20development">1P8TJvvJ7oHGneWuwSXN3DMBd7gYxCUQjc</a>
+
+![](https://raw.githubusercontent.com/laurent22/joplin/master/docs/images/BitcoinQr.png)
+
+## Other way to support the development
+
+There are other ways to support the development of Joplin:
+
+- Consider rating the app on [Google Play](https://play.google.com/store/apps/details?id=net.cozic.joplin&utm_source=GitHub&utm_campaign=README&pcampaignid=MKT-Other-global-all-co-prtnr-py-PartBadge-Mar2515-1) or [App Store](https://itunes.apple.com/us/app/joplin/id1315599797).
+- [Create of update a translation](http://joplin.cozic.net/#localisation).
+- Help with the [documentation](https://github.com/laurent22/joplin).