Added config info

README.md

@@ -35,3 +35,16 @@ Added MQTT and power saving features.
 <p align="center">
   <img src="https://mongoose-os.com/images/app1.gif" width="75%">
 </p>
+
+## Configuration
+
+config_schema:
+  - ["higrow", "o", {title: "LilyGo HiGrow ESP32 Plant Sensor v1 App Settings"}]
+  - ["higrow.deviceId", "s", "", {title: "DeviceId"}]
+  - ["higrow.send_mqtt", "b", true, {title: "Send data using MQTT"}]
+  - ["higrow.send_http", "b", false, {title: "Send data using HTTP"}]
+  - ["higrow.send_http_url", "s", "http://example.org/what/ever", {title: "Send data using HTTP"}]
+  - ["higrow.sample_time", "i", 60, {title: "Take a sample after that amount of seconds"}]
+
+  To change the configuration it is recommended to use either UART or MQTT communications.
+