Add note about remote two-button limit

WasabiFan · WasabiFan · commit 60d598c7565b · 2018-10-03T22:16:49.000-07:00
diff --git a/ev3dev2/sensor/lego.py b/ev3dev2/sensor/lego.py
@@ -825,6 +825,8 @@ def beacon(self, channel=1):
     def buttons_pressed(self, channel=1):
         """
         Returns list of currently pressed buttons.
+
+        Note that the sensor can only identify up to two buttons pressed at once.
         """
         self._ensure_mode(self.MODE_IR_REMOTE)
         channel = self._normalize_channel(channel)
