Ruby script to replace an iOS settings bundle depending on the DEBUG/RELEASE build configuration flag.

build.rb

configuration = ENV["CONFIGURATION"]
project_dir = ENV["PROJECT_DIR"]
settings_bundle = "#{project_dir}/Resources/Settings.bundle"
plist_location = "#{project_dir}/Resources/SettingPlists"

release_or_debug = ENV["CONFIGURATION"] == "Debug" ? "Debug" : "Release"
settings_plist = "#{plist_location}/SettingsRoot#{release_or_debug}.plist"

system("cp #{settings_plist} #{settings_bundle}/Root.plist");
system("touch #{settings_bundle}/Root.plist");