Add async streaming ticks recipe.

docs/recipes.rst

@@ -169,6 +169,41 @@ Fundemental ratios
     ib.sleep(2)
     print(ticker.fundamentalRatios)
 
+Async streaming ticks
+^^^^^^^^^^^^^^^^^^^^^
+
+.. code-block:: python
+
+    import asyncio
+
+    import ib_insync as ibi
+
+
+    class App:
+
+        async def run(self):
+            self.ib = ibi.IB()
+            with await self.ib.connectAsync():
+                contracts = [
+                    ibi.Stock(symbol, 'SMART', 'USD')
+                    for symbol in ['AAPL', 'TSLA', 'AMD', 'INTC']]
+                for contract in contracts:
+                    self.ib.reqMktData(contract)
+
+                async for tickers in self.ib.pendingTickersEvent:
+                    for ticker in tickers:
+                        print(ticker)
+
+        def stop(self):
+            self.ib.disconnect()
+
+
+    app = App()
+    try:
+        asyncio.run(app.run())
+    except (KeyboardInterrupt, SystemExit):
+        app.stop()
+
 Integration with PyQt5 or PySide2
 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 
@@ -197,4 +232,4 @@ Integration with Tkinter
 ^^^^^^^^^^^^^^^^^^^^^^^^
 
 To integrate with the Tkinter event loop, take a look at
-`this example app <https://github.com/erdewit/ib_insync/blob/master/examples/tk.py>`_.
+`this example app <https://github.com/erdewit/ib_insync/blob/master/examples/tk.py>`_.