Add Web Monetization (sindresorhus#1812)

readme.md

@@ -678,6 +678,7 @@
 - [Prometheus](https://github.com/roaldnefs/awesome-prometheus#readme) - Open-source monitoring system.
 - [Homematic](https://github.com/homematic-community/awesome-homematic#readme) - Smart home devices.
 - [Ledger](https://github.com/sfischer13/awesome-ledger#readme) - Double-entry accounting on the command-line.
+- [Web Monetization](https://github.com/thomasbnt/awesome-web-monetization#readme) - A free open web standard service that allows you to send money directly in your browser. 
 - [Uncopyright](https://github.com/johnjago/awesome-uncopyright#readme) - Public domain works.
 - [Crypto Currency Tools & Algorithms](https://github.com/Zheaoli/awesome-coins#readme) - Digital currency where encryption is used to regulate the generation of units and verify transfers.
 - [Diversity](https://github.com/folkswhocode/awesome-diversity#readme) - Creating a more inclusive and diverse tech community.