--- a/README	Sun Mar 30 20:35:30 2014 +0800
+++ b/README	Thu Jun 26 21:35:23 2014 +0800
@@ -3,10 +3,13 @@
 py/ code runs on a raspberry pi with ds18b20 sensors.
 Dependencies can be installed with pip from requirements.txt
 
+This is implemented using gevent so the fridge, sensors, uploader
+etc are each written as independent tasks.
+
 ---
 
 web/ code is a Bottle web app for showing graphs and also
-controlling the  temperature from a phone-optimised UI
+controlling the temperature from a phone-optimised UI
 
 ---