Update example

example.py

@@ -1,43 +1,33 @@
-"""Sample code for the wrapper to interact with the currencylayer API."""
+"""Sample code for interacting with the currencylayer API."""
 import asyncio
 
-import aiohttp
-
 from aiocurrencylayer import CurrencyLayer
 
-API_KEY = 'YOUR_CURRENCYLAYER_API_KEY'
-QUOTE = 'CHF'
-SOURCE = 'USD'
+API_KEY = "YOUR_API_KEY"
+QUOTE = "CHF"
+SOURCE = "USD"
 
 
 async def main():
     """The main part of the example script."""
-    async with aiohttp.ClientSession() as session:
-        currency = CurrencyLayer(loop, session, API_KEY, source=SOURCE)
+    currency = CurrencyLayer(API_KEY, source=SOURCE)
 
-        # Get the data
-        await currency.get_data()
+    # Get the data
+    await currency.get_data()
 
-        # Validate the API key
-        if await currency.validate_api_key() is False:
-            print(currency.data['error']['info'].split('.')[0])
-            return
+    # Validate the API key
+    if currency.validate_api_key is False:
+        print(currency.data["error"]["info"].split(".")[0])
 
-        # Check if it's a free plan
-        if await currency.check_free_plan() is True:
-            print(
-                "An API key for free plan is used, only USD as source allowed")
-            return
+    print("Supported currencies:", len(currency.supported_currencies))
 
-        print("Supported currencies:",
-              len(await currency.supported_currencies()))
+    # Get all quotes (identical to currency.quotes), use quote=CURRENCY
+    # to initialize the object to only get one currency
+    print(currency.quote)
 
-        # Get all quotes (identical to currency.quotes), use quote=CURRENCY
-        # to initialize the object to only get one currency
-        print(currency.quote)
+    # Get a single quote
+    print(QUOTE, currency.quotes[QUOTE])
 
-        # Get a single quote
-        print(QUOTE, currency.quotes[QUOTE])
 
 loop = asyncio.get_event_loop()
 loop.run_until_complete(main())