Add note to readme about known issue

README.md

@@ -18,6 +18,9 @@ Devices Supported
 
 [CP2130 SPI-USB](http://www.silabs.com/products/interface/usb-bridges/classic-usb-bridges/Pages/usb-to-spi-bridge.aspx)
 
+Known Issue
+--------------------------------------
+Due to a bug in Android itself, it's highly recommended to not use it with a device running [Android 5.1.1 Lollipop](https://en.wikipedia.org/wiki/Android_version_history#Android_5.1_Lollipop_(API_22)). See issue [#142](https://github.com/felHR85/UsbSerial/issues/142) for more details.
 How to use it?
 --------------------------------------
 Instantiate a new object of the UsbSerialDevice class