docs: add intro in the README.md

README.md

@@ -2,3 +2,22 @@
 
 A proof of concept application to stake tokens in XION, using the native
 authentication via the dashboard.
+
+## Development
+
+The only dependency to run the project locally is Node.js. It has been tested
+with Node.js v20. Once you have it installed, you can run:
+
+```bash
+npm install
+
+npm run dev
+```
+
+It integrates the `@burnt-labs/abstraxion` library from
+[xion.js](https://github.com/burnt-labs/xion.js).
+
+The main part of the business logic that queries and interacts with XION
+is in:
+
+- [./src/features/staking/lib](./src/features/staking/lib)