wording improvements

README.md

@@ -92,13 +92,13 @@ If you're done playing around with simulations and want to deploy the code on a
 
 ## Configuration
 
-All parameters are defined in config.py. You need to read through config.py carefully to understand each setting.
+All parameters are defined in config.py. You need to read through config.py carefully to understand each setting. Here are some of the most important settings:
 
 | Variable | Default | Description |
 | -------- | ------- | ----------- |
 | sensor_time_wait | 2 seconds | It's the duty cycle for the entire system.  It's set to two seconds by default which means that a decision is made every 2s about whether to turn on relay[s] and for how long. If you use mechanical relays, you may want to increase this. At 2s, my SSR switches 11,000 times in 13 hours. |
 | temp_scale | f | f for farenheit, c for celcius |
-| pid parameters | | You should tune your kiln. See PID Tuning |
+| pid parameters | | Used to tune your kiln. See PID Tuning. |
 | simulate | True | Simulate a kiln. Used to test the software by new users so they can check out the features. |