update readme [skip CI]

Author: VREMSoftwareDevelopment

README.md

@@ -63,6 +63,7 @@ This is the official repository of WiFi Analyzer.
 * [How is distance calculated to Access Point](https://en.wikipedia.org/wiki/Free-space_path_loss)
 
 ## FAQ
+* [Android Pie throttling Wi-Fi scanning](https://www.androidpolice.com/2019/05/29/android-started-heavily-throttling-wi-fi-scanning-in-pie-google-confirms-its-here-to-stay)
 * [Location Service Permission Requirements](https://github.com/VREMSoftwareDevelopment/WiFiAnalyzer/wiki/Location-Service-Permission-Requirements)
 * [WiFi Analyzer on secondary user accounts](https://github.com/VREMSoftwareDevelopment/WiFiAnalyzer/wiki/WiFi-Analyzer-on-secondary-user-accounts)
 * [How channel graph displays 20/40/80/160 MHz channel width?](https://github.com/VREMSoftwareDevelopment/WiFiAnalyzer/issues/64)