Fixed bug with run_cmd, now always needs a list of args (not an array)
Corrected spec and targeted against production
Bump to 0.3.0 version

	modified:   lib/lambom/converger.rb
	modified:   lib/lambom/shell_mixin.rb
	modified:   lib/lambom/version.rb
	modified:   spec/api_client_spec.rb
	modified:   spec/converger_spec.rb
	new file:   spec/public_key.pem