Small Improvements

README.md

@@ -7,14 +7,21 @@ Configure a list of sensors.  The index is required, the rest is the standard se
 Example:
 ```yaml
 sensor:
-  - platform: serial_csv
-    uart_id: my_uart   # optional
+  - platform: marlin2
+    uart_id: uart_bus #optional
     bed_temperature:
       name: Current Bed Temp
+    bed_set_temperature:
+      name: Set Bed Temp
     ext_temperature:
       name: Current Ext Temp
+    ext_set_temperature:
+      name: Set Ext Temp
+    print_progress:
+      name: Progress
 ```
 
 
-https://github.com/ssieb/esphome_components/tree/master/components/serial_csv
-https://github.com/esphome/esphome/blob/dev/esphome/components/dht/sensor.py#L34
+* https://github.com/ssieb/esphome_components/tree/master/components/serial_csv
+* https://github.com/esphome/esphome/blob/dev/esphome/components/dht/sensor.py#L34
+* https://github.com/mulcmu/esphome-marlin-uart