gitignore: ignore UserSettings and Logs (#1068)

Author: sindharta-tanuwijaya

.gitignore

@@ -218,6 +218,7 @@ upm-ci~/
 Plugin~/webrtc/*
 WebRTC~/CodeCoverage
 WebRTC~/TestResults-*
+WebRTC~/Logs
 *.dbmdl
 *.dbproj.schemaview
 *.jfm
@@ -359,6 +360,7 @@ Plugin~/WebRTCPluginTest/webrtc-test.xcodeproj/*
 [Tt]emp/
 [Oo]bj/
 [Bb]uild/
+[Uu]serSettings/
 
 # Exclude Documentation folder
 !Documentation~