docs(examples): drop stale third-party install hints (#323)

live_binance.py uses the native BinanceFeed and the node examples no longer
depend on ws, so the examples README no longer tells readers to pip install
websockets or that npm install pulls ws. The whole examples set runs on
Wickra alone.

examples/README.md

@@ -150,7 +150,8 @@ build-checked but not run in CI.
 | `strategy_macd_adx.py` | Hourly BTCUSDT trend-follower: MACD crossover entries gated by ADX(14) > 20. | `python -m examples.python.strategy_macd_adx` |
 | `strategy_bollinger_squeeze.py` | Daily BTCUSDT Bollinger-squeeze breakout with ATR(14) trailing stop. | `python -m examples.python.strategy_bollinger_squeeze` |
 
-`live_binance.py` additionally needs `pip install websockets`.
+Every Python example runs on Wickra alone — no third-party packages.
+`live_binance.py` uses the native `BinanceFeed` and `fetch_btcusdt.py` the stdlib `urllib`.
 
 ## Node.js — `examples/node/`
 
@@ -158,7 +159,7 @@ Build the native binding once, then link it into the examples directory:
 
 ```bash
 cd bindings/node && npm install && npx napi build --platform --release
-cd ../../examples/node && npm install        # links wickra + installs `ws`
+cd ../../examples/node && npm install        # links wickra (no third-party packages)
 ```
 
 | Example | What it does | Run |