Add a simple best practices logging demo

app.py

@@ -1,10 +1,22 @@
+import os, logging
+
 from chalice import Chalice
 
+log_level = logging.getLevelName(os.environ.get("LOG_LEVEL", "INFO"))
+logging.basicConfig(level=log_level)
+logging.getLogger().setLevel(log_level)
+
 app = Chalice(app_name='chalice-app-template')
+app.debug = True if log_level == logging.DEBUG else False
 
+logger = logging.getLogger(__name__)
 
 @app.route('/')
 def index():
+    app.log.debug("This is a debug logging test with the app logger")
+    app.log.error("This is an error logging test with the app logger")
+    logger.debug("This is a debug logging test with the module logger")
+    logger.error("This is an error logging test with the module logger")
     return {'hello': 'world'}