To use this package, do the following:

1.  Generate a basic auth username/password as per http://code.google.com/p/munki/wiki/SecuringMunkiUsingBasicAuthentication#Configuring_the_Clients_to_Use_a_Password
2.  Confirm other settings in ManagedInstalls.plist are correct for your environment
3.  Customize Makefile to your liking.