Add some badges to README.

HACS Custom badge to indicate availability through HACS as a custom repo.
BMC badge.

README.md

@@ -135,6 +135,8 @@ Support for Purline Hoti M100 heaters and Garden PAC pool heatpumps were added b
 
 ## Installation
 
+[![hacs_badge](https://img.shields.io/badge/HACS-Custom-orange.svg?style=for-the-badge)](https://github.com/custom-components/hacs)
+
 Installation is via the [Home Assistant Community Store (HACS)](https://hacs.xyz/), which is the best place to get third-party integrations for Home Assistant. Once you have HACS set up, simply follow the [instructions for adding a custom repository](https://hacs.xyz/docs/navigation/settings#custom-repositories) and then the integration will be available to install like any other.
 
 ## Configuration
@@ -251,3 +253,5 @@ None of this would have been possible without some foundational discovery work t
 - [awaismun](https://github.com/awaismun) for assistance in supporting Andersson heaters.
 - [FeikoJoosten](https://github.com/FeikoJoosten) for development of support for Eurom heaters.
 - [Xeovar](https://github.com/Xeovar) for assistance in supporting Purline M100 heaters and Garden PAC pool heatpumps.
+
+[![BuyMeCoffee](https://www.buymeacoffee.com/assets/img/custom_images/orange_img.png)](https://www.buymeacoffee.com/jasonrumney)