Docs improvements/corrections (#1018)

docs/prerequisites/board.md

@@ -31,7 +31,7 @@ The boards below doesn't need hardware modification (or a lite one).
 The boards below need hardware [parts](parts.md) and electronic/hardware competencies. You have more possibilities of gateways combination, compared to off the shelves ones.
 |DIY boards|RF|IR|BLE|LORA|GSM|Button|Relay|
 |-|:-:|:-:|:-:|:-:|:-:|:-:|:-:|
-|Arduino UNO|X|X(limited compared to ESP)|-|-|X|X|
+|Arduino UNO|X|X(limited compared to ESP)|-|-|-|X|X|
 |Arduino MEGA|X|X(limited compared to ESP)|X|-|-|X|X|
 |ESP32|X|X|X|X|not tested|X|X|
 |ESP8266|X|X|X|not tested|X|X|X|

docs/prerequisites/devices.md

@@ -46,6 +46,7 @@ Added to that it retrieves the measures from the devices below. By default the d
 | Thermobeacon|WS02|temperature/humidity/volt|
 | ATorch Battery Capacity Monitor (c)|DT24|volt/amp/watt|
 | Eddystone TLM|protocol|temperature/count/volt/time|
+| Ibeacon|protocol|UUID/MFID/Major/Minor/Power|
 | Mokosmart (1)|M1|x_axis/y_axis/z_axis/battery|
 | Mokosmart (1)|H4|temperature/humidity/volt|