Update README.md

README.md

@@ -12,7 +12,7 @@ Support
 
 **Support** If you like `linux-insides` you can support me with: 
 
-[![Flattr linux-insides](http://api.flattr.com/button/flattr-badge-large.png)](https://flattr.com/submit/auto?user_id=0xAX&url=https://github.com/0xAX/linux-insides/&title=linux-insed) [![Support at gratipay](http://img.shields.io/gratipay/0xAX.svg)](https://gratipay.com/0xAX/)
+[![Flattr linux-insides](https://img.shields.io/badge/donate-flattr-green.svg)](https://flattr.com/submit/auto?user_id=0xAX&url=https://github.com/0xAX/linux-insides/&title=linux-insed) [![Support at gratipay](http://img.shields.io/gratipay/0xAX.svg)](https://gratipay.com/0xAX/)[![Support with bitcoin](https://img.shields.io/badge/donate-bitcoin-green.svg)](https://www.coinbase.com/checkouts/0bfa452a41cf52c0b3f99500b4f31685)[![Support via gitbook](https://img.shields.io/badge/donate-gitbook-green.svg)](https://gumroad.com/l/gitbook_54c9232c1db1670300055523?wanted=true)
 
 Contributions 
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