Corrected the table in README.md

firmware/README.md

@@ -1,12 +1,13 @@
 Firmware
 ========
+
 The kiln controller circuit communicates with the raspberry pi using an I2C bus. This allows multiple connectors to be stacked to enable more controllers and feedback circuits.
 
 Communication protocol
 ----------------------
 
-| Register	|	Input 		| Meaning						|
--------------------------------------------------------------
-| ord('I')	|   True/False	| Toggle ignition				|
-| ord('M')  |	integer		| Move motor 					|
-| ord('F')	|	None		| Show flame status				|
+| Register   | Input      | Meaning           |
+|------------|------------|-------------------|
+| `ord('I')` | True/False | Toggle ignition   |
+| `ord('M')` | Integer    | Move motor        |
+| `ord('F')` | None       | Show flame status |