Update README.md

Signed-off-by: Andrew Wallo <andrewdwallo@gmail.com>

README.md

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 A Laravel and Filament-powered accounting platform, crafting a modern and automated solution for financial management.
 
+## Sponsorship
+
+While **ERPSAAS** is open-source, maintaining it requires significant time and resources. Your sponsorship directly supports ongoing development, bug fixes, and improved documentation.
+
+As a solo developer, I can only provide limited free support. Sponsors receive priority assistance, input on feature priorities, and early access to updates. Even a small monthly contribution makes a significant difference in keeping this project actively maintained.
+
+**Become a sponsor:** [GitHub Sponsors](https://github.com/sponsors/andrewdwallo)
+
 # Getting started
 
 ## Installation