knife 0.9.18 wrapper with suppressed warnings

knife.rb

#!/usr/bin/env ruby

# Optional: Force a particular Ruby version & gemset.
if ENV['BUNDLE_GEMFILE'].nil?
  ENV['RBENV_VERSION'] = '1.9.3'
  ENV['BUNDLE_GEMFILE'] = "#{ENV['HOME']}/ops/kitchen/Gemfile"
  exec('bundle', 'exec', $0, *ARGV)
end

# Suppress iconv deprecation warning.
begin
  verbosity = $VERBOSE
  $VERBOSE = nil
  require 'iconv'
ensure
  $VERBOSE = verbosity
end

# Suppress Config -> RbConfig deprecation warning.
require 'rbconfig'
class Object
  Config = RbConfig
end

# Load real knife.
load "#{Gem.bindir}/knife"