add yfinance and more readme

README.md

@@ -9,6 +9,19 @@ https://docs.astral.sh/uv/
 curl -LsSf https://astral.sh/uv/install.sh | sh
 ```
 
+### 2. Setup the env
+Simply run
+```bash
+uv sync
+```
+This will install python & the dependencies declared so far
+
+### 3. Adding a dependency
+
+```bash
+uv add requests
+```
+
 # Managing a project with uv
 
 https://docs.astral.sh/uv/guides/projects/#managing-dependencies