Mention ui.warn_on_config_file_overrides and ui.warn_on_config_file_overrides_ignore_files
Mention ui.warn_on_config_file_overrides and ui.warn_on_config_file_overrides_ignore_files

Summary: These settings were added recently; document them.

Reviewed By: carljparker

fbshipit-source-id: 6927a13f2a

brettwooldridge/buck,SeleniumHQ/buck,Addepar/buck,SeleniumHQ/buck,SeleniumHQ/buck,rmaz/buck,kageiit/buck,SeleniumHQ/buck,romanoid/buck,nguyentruongtho/buck,facebook/buck,rmaz/buck,zpao/buck,kageiit/buck,Addepar/buck,JoelMarcey/buck,SeleniumHQ/buck,romanoid/buck,romanoid/buck,brettwooldridge/buck,Addepar/buck,Addepar/buck,rmaz/buck,SeleniumHQ/buck,Addepar/buck,brettwooldridge/buck,SeleniumHQ/buck,facebook/buck,romanoid/buck,romanoid/buck,JoelMarcey/buck,facebook/buck,romanoid/buck,Addepar/buck,zpao/buck,JoelMarcey/buck,rmaz/buck,brettwooldridge/buck,nguyentruongtho/buck,facebook/buck,SeleniumHQ/buck,rmaz/buck,rmaz/buck,zpao/buck,Addepar/buck,brettwooldridge/buck,JoelMarcey/buck,brettwooldridge/buck,JoelMarcey/buck,Addepar/buck,nguyentruongtho/buck,rmaz/buck,brettwooldridge/buck,rmaz/buck,brettwooldridge/buck,JoelMarcey/buck,kageiit/buck,rmaz/buck,JoelMarcey/buck,SeleniumHQ/buck,JoelMarcey/buck,SeleniumHQ/buck,kageiit/buck,JoelMarcey/buck,nguyentruongtho/buck,JoelMarcey/buck,facebook/buck,romanoid/buck,kageiit/buck,kageiit/buck,brettwooldridge/buck,facebook/buck,nguyentruongtho/buck,rmaz/buck,romanoid/buck,romanoid/buck,brettwooldridge/buck,romanoid/buck,nguyentruongtho/buck,zpao/buck,zpao/buck,brettwooldridge/buck,romanoid/buck,Addepar/buck,nguyentruongtho/buck,Addepar/buck,kageiit/buck,JoelMarcey/buck,Addepar/buck,Addepar/buck,brettwooldridge/buck,SeleniumHQ/buck,SeleniumHQ/buck,JoelMarcey/buck,zpao/buck,rmaz/buck,rmaz/buck,rmaz/buck,romanoid/buck,SeleniumHQ/buck,romanoid/buck,facebook/buck,brettwooldridge/buck,zpao/buck,Addepar/buck,JoelMarcey/buck