nuget-config-custfeed.xml

<?xml version="1.0" encoding="utf-8"?>
<configuration>
	<packageSources>
		<clear/>
		<add key="MyPrivateFeed" value="https://www.myget.org/F/privatefeed/" />
		<add key="Official" value="http://nuget.org/api/v2/" />
	</packageSources>
	<packageSourceCredentials>
		<MyPrivateFeed>
			<add key="Username" value="readonlyuser" />
			<add key="ClearTextPassword" value="readonlypassword" />
		</MyPrivateFeed>
	</packageSourceCredentials>
</configuration>