docs(FAQ.md): explanation for configuration changes in managed services

FAQ.md

@@ -1,15 +1,29 @@
 # iBeacon Cordova Plugin - Frequently Asked Questions
 
-### How do I debug notifications in the background?
+## How do I debug notifications in the background?
 
 Enable the debug logging and inspect the console logs of your device through XCode.
 
 
-### I would like to customise how frequently the AltBeacon library scans for proximity devices (beacons). How do I do that?
+## I would like to customise how frequently the AltBeacon library scans for proximity devices (beacons). How do I do that?
 
 Introduce an Android specific preference in your config.xml, something like this:
 
     <preference name="com.unarin.cordova.beacon.android.altbeacon.ForegroundBetweenScanPeriod" value="5000" />
-    
+
 This will ensure that the AltBeacon library will wait five seconds in-between foreground scans.
 The default is 0 for the mentioned configuration value.
+
+## How do I configure the permissions when working with a managed service (Phonegap Build, Ionic Cloud, etc.)
+
+The newer versins of the cordova CLI come with features to help you do that:
+
+```xml
+    <edit-config file="*-Info.plist" target="UIBackgroundModes" mode="merge">
+        <array>
+            <string>location</string>
+        </array>
+    </edit-config>
+```
+
+https://github.com/petermetz/cordova-plugin-ibeacon/issues/310#issuecomment-329564186