update donate links and spanish readme
<a href="https://github.com/gepd/deviot/releases"><img src="https://img.shields.io/github/release/gepd/deviot.svg?maxAge=3600&style=flat-square" alt="Release"></a>
<a href="https://packagecontrol.io/packages/Deviot%20(Arduino%20IDE)"><img src="https://img.shields.io/packagecontrol/dt/Deviot%20(Arduino%20IDE).svg?maxAge=3600&style=flat-square" alt="Downloads"></a>
<a href="https://github.com/gepd/Deviot/blob/master/LICENCE"><img src="https://img.shields.io/badge/Licence-%20Apache%20Software%20License-green.svg?maxAge=3600&style=flat-square" alt="Licence"></a>
- <a href="https://gratipay.com/~gepd/"><img src="https://img.shields.io/badge/donate-Deviot-orange.svg?maxAge=3600&style=flat-square" alt="Donate"></a>
+ <a href="https://www.paypal.me/gepd"><img src="https://img.shields.io/badge/donate-Deviot-orange.svg?maxAge=3600&style=flat-square" alt="Donate"></a>
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