fix error

announcement.gemspec

@@ -4,6 +4,7 @@ $:.push File.expand_path("../lib", __FILE__)
 # Maintain your gem's version:
 require "announcement/version"
 require 'json'
+require 'yaml'
 bundle_update_flag = ARGV[0]=='update' || ARGV[0]=='install'
 if bundle_update_flag
   env_pwd = ENV['PWD']
@@ -164,7 +165,8 @@ if bundle_update_flag
       secret_key = r.scan(/Orbit::Application\.config\.secret_key_base = '(.*)'/).flatten[0] rescue nil
       if !secret_key.nil?
          open("#{env_pwd}/config/secrets.yml",'w+') do |f|
-          c = {"production"=> {"secret_key_base"=> secret_key},"development"=> {"secret_key_base"=> secret_key}}.to_yaml.sub("---\n",'')
+          c = {"production"=> {"secret_key_base"=> secret_key},"development"=> {"secret_key_base"=> secret_key}}
+          c = c.to_yaml.sub("---\n",'')
           f.write(c)
         end
       end