Implemented delegate method for when the advertiser fails to start

Author: insidegui

Sources/MultipeerKit/Internal API/MultipeerConnection.swift

@@ -236,4 +236,8 @@ extension MultipeerConnection: MCNearbyServiceAdvertiserDelegate {
         })
     }
 
+    func advertiser(_ advertiser: MCNearbyServiceAdvertiser, didNotStartAdvertisingPeer error: Error) {
+        os_log("The multipeer connection failed to start advertising to peers. This could be due to missing keys in your app's Info.plist, check out the documentation at http://github.com/insidegui/MultipeerKit for more information. Error: %{public}@", log: log, type: .fault, String(describing: error))
+    }
+
 }