我想在我的新 Rails 项目上安装 social_stream，我已经在 3.1.0.rc5 Rails 上安装了它，但我无法让它工作。
这是我在运行命令时在控制台上看到的错误消息
gem 'social_stream'
如果有人帮助我完成它，我将非常感激。
:public is no longer used to avoid overloading Module#public, use :public_folder instead
from /home/baran/.rvm/gems/ruby-2.0.0-p247/gems/resque-1.17.1/lib/resque/server.rb:12:in `<class:Server>'
SECURITY WARNING: No secret option provided to Rack::Session::Cookie.
This poses a security threat. It is strongly recommended that you
provide a secret to prevent exploits that may be possible from crafted
cookies. This will not be supported in future versions of Rack, and
future versions will even invalidate your existing user cookies.
Called from: /home/baran/.rvm/gems/ruby-2.0.0-p247/gems/actionpack-3.1.0.rc5 /lib/action_dispatch/middleware/session/abstract_store.rb:28:in `initialize'. /home/baran/.rvm/gems/ruby-2.0.0-p247/gems/actionpack-3.1.0.rc5/lib/sprockets /ailtie.rb:49:in `asset_environment': undefined method `static_root=' for #<Sprockets::Environment:0x9f647a4> (NoMethodError)
from /home/baran/.rvm/gems/ruby-2.0.0-p247/gems/railties-3.1.0.rc5/lib/rails/railtie/configurable.rb:30:in `method_missing'
from /home/baran/.rvm/gems/ruby-2.0.0-p247/gems/actionpack-3.1.0.rc5/lib/sprockets/railtie.rb:22:in `block in <class:Railtie>'
from /home/baran/.rvm/gems/ruby-2.0.0-p247/gems/activesupport-3.1.0.rc5/lib/active_support/lazy_load_hooks.rb:34:in `call'
from /home/baran/.rvm/gems/ruby-2.0.0-p247/gems/activesupport-3.1.0.rc5/lib/active_support/lazy_load_hooks.rb:34:in `execute_hook'
from /home/baran/.rvm/gems/ruby-2.0.0-p247/gems/activesupport-3.1.0.rc5/lib/active_support/lazy_load_hooks.rb:43:in `block in run_load_hooks'
from /home/baran/.rvm/gems/ruby-2.0.0-p247/gems/activesupport-3.1.0.rc5/lib/active_support/lazy_load_hooks.rb:42:in `each'
from /home/baran/.rvm/gems/ruby-2.0.0-p247/gems/activesupport-3.1.0.rc5/lib/active_support/lazy_load_hooks.rb:42:in `run_load_hooks'
from /home/baran/.rvm/gems/ruby-2.0.0-p247/gems/railties-3.1.0.rc5/lib/rails/application/finisher.rb:56:in `block in <module:Finisher>'
from /home/baran/.rvm/gems/ruby-2.0.0-p247/gems/railties-3.1.0.rc5/lib/rails/initializable.rb:25:in `instance_exec'
from /home/baran/.rvm/gems/ruby-2.0.0-p247/gems/railties-3.1.0.rc5/lib/rails/initializable.rb:25:in `run'
from /home/baran/.rvm/gems/ruby-2.0.0-p247/gems/railties-3.1.0.rc5/lib/rails/initializable.rb:50:in `block in run_initializers'
from /home/baran/.rvm/gems/ruby-2.0.0-p247/gems/railties-3.1.0.rc5/lib/rails/initializable.rb:49:in `each'
from /home/baran/.rvm/gems/ruby-2.0.0-p247/gems/railties-3.1.0.rc5/lib/rails/initializable.rb:49:in `run_initializers'
from /home/baran/.rvm/gems/ruby-2.0.0-p247/gems/railties-3.1.0.rc5/lib/rails/application.rb:92:in `initialize!'
from /home/baran/.rvm/gems/ruby-2.0.0-p247/gems/railties-3.1.0.rc5/lib/rails/railtie/configurable.rb:30:in `method_missing'
from /home/baran/RubymineProjects/bktest1/config/environment.rb:5:in `<top (required)>'
from /home/baran/.rvm/gems/ruby-2.0.0-p247/gems/activesupport-3.1.0.rc5/lib/active_support/dependencies.rb:237:in `require'
from /home/baran/.rvm/gems/ruby-2.0.0-p247/gems/activesupport-3.1.0.rc5/lib/active_support/dependencies.rb:237:in `block in require'
from /home/baran/.rvm/gems/ruby-2.0.0-p247/gems/activesupport-3.1.0.rc5/lib/active_support/dependencies.rb:223:in `block in load_dependency'
from /home/baran/.rvm/gems/ruby-2.0.0-p247/gems/activesupport-3.1.0.rc5/lib/active_support/dependencies.rb:639:in `new_constants_in'
from /home/baran/.rvm/gems/ruby-2.0.0-p247/gems/activesupport-3.1.0.rc5/lib/active_support/dependencies.rb:223:in `load_dependency'
from /home/baran/.rvm/gems/ruby-2.0.0-p247/gems/activesupport-3.1.0.rc5/lib/active_support/dependencies.rb:237:in `require'
from /home/baran/.rvm/gems/ruby-2.0.0-p247/gems/railties-3.1.0.rc5/lib/rails/application.rb:78:in `require_environment!'
from /home/baran/.rvm/gems/ruby-2.0.0-p247/gems/railties-3.1.0.rc5/lib/rails/commands.rb:22:in `<top (required)>'
from script/rails:6:in `require'
from script/rails:6:in `<main>'
这是宝石清单：
actionmailer (4.0.0, 3.2.14, 3.1.0.rc8, 3.1.0.rc5)
actionpack (4.0.0, 3.2.14, 3.1.0.rc8, 3.1.0.rc5)
activemodel (4.0.0, 3.2.14, 3.1.0.rc8, 3.1.0.rc5)
activerecord (4.0.0, 3.2.14, 3.1.0.rc8, 3.1.0.rc5)
activerecord-deprecated_finders (1.0.3)
activerecord-mysql2-adapter (0.0.3)
activeresource (3.2.14, 3.1.0.rc8, 3.1.0.rc5)
activesupport (4.0.0, 3.2.14, 3.1.0.rc8, 3.1.0.rc5)
acts-as-taggable-on (2.0.6)
acts_as_commentable (3.0.1)
addressable (2.3.5, 2.2.4)
ancestry (1.2.5)
ansi (1.4.3)
arel (4.0.0, 3.0.2, 2.2.3, 2.1.4)
atomic (1.1.13)
authlogic (3.3.0)
avatars_for_rails (0.1.6)
aws-s3 (0.6.3)
babosa (0.3.11)
bborn-acts-as-taggable-on (2.2.1)
bcrypt-ruby (3.1.2, 3.0.1, 2.1.4)
builder (3.1.4, 3.0.4)
bundler (1.3.5)
bundler-unload (1.0.1)
cancan (1.6.10)
cocaine (0.3.2)
coffee-rails (4.0.0, 3.2.2, 3.1.0)
coffee-script (2.2.0)
coffee-script-source (1.6.3)
community_engine (2.3.0)
configatron (2.13.0)
devise (1.3.4)
dynamic_form (1.1.4)
erubis (2.7.0)
execjs (2.0.1)
faraday (0.8.8, 0.6.1)
foreigner (0.9.2)
formtastic (1.2.4)
friendly_id (3.3.3.0)
haml (4.0.3)
has_scope (0.5.1)
hashie (2.0.5)
hike (1.2.3)
hpricot (0.8.6)
htmlentities (4.3.1)
i18n (0.6.5)
inherited_resources (1.2.2)
jbuilder (1.5.1)
journey (1.0.4)
jquery-rails (3.0.4, 1.0.19)
json (1.8.0, 1.5.5)
kaminari (0.14.1, 0.12.4)
koala (1.6.0)
mail (2.5.4, 2.3.3)
mailboxer (0.5.1)
meta_search (1.1.3)
mime-types (1.25)
mini_portile (0.5.1)
minitest (4.7.5)
modernizr-rails (2.0.6)
multi_json (1.7.9, 1.0.4)
multi_xml (0.2.2)
multipart-post (1.2.0, 1.1.5)
mysql2 (0.3.13)
net-ldap (0.2.2)
nokogiri (1.6.0, 1.4.7)
oa-basic (0.2.6)
oa-core (0.2.6)
oa-enterprise (0.2.6)
oa-more (0.2.6)
oa-oauth (0.2.6)
oa-openid (0.2.6)
oauth (0.4.7)
oauth-plugin (0.4.0.rc2)
oauth2 (0.4.1)
omniauth (1.1.4, 0.2.6)
orm_adapter (0.0.7)
paperclip (2.4.5, 2.3.11)
paperclip-ffmpeg (0.7.0)
polyamorous (0.5.0)
polyglot (0.3.3)
prototype-rails (3.2.1)
pyu-ruby-sasl (0.0.3.3)
rack (1.5.2, 1.4.5, 1.3.10)
rack-cache (1.2, 1.0.3)
rack-mount (0.8.3)
rack-openid (1.3.1)
rack-protection (1.5.0)
rack-ssl (1.3.3)
rack-test (0.6.2)
rails (4.0.0, 3.2.14, 3.1.0.rc8, 3.1.0.rc5)
rails_autolink (1.1.0)
railties (4.0.0, 3.2.14, 3.1.0.rc8, 3.1.0.rc5)
rake (10.1.0)
rakismet (1.3.0)
rdoc (3.12.2)
recaptcha (0.3.5)
redis (2.2.2)
redis-namespace (1.0.4)
responders (0.6.5)
resque (1.17.1)
rest-client (1.6.7)
ri_cal (0.8.8)
rmagick (2.13.2)
ruby-openid (2.2.3)
ruby-openid-apps-discovery (1.2.0)
rubygems-bundler (1.2.2)
rubyntlm (0.1.1)
rvm (1.11.3.8)
sanitize (2.0.6)
sass (3.2.10)
sass-rails (4.0.0, 3.2.6, 3.1.0.rc.5)
sdoc (0.3.20)
simple-navigation (3.11.0)
sinatra (1.3.3)
social_stream (0.7.8)
social_stream-base (0.7.11)
social_stream-documents (0.2.4)
social_stream-events (0.0.1)
sprockets (2.10.0, 2.2.2, 2.0.4)
sprockets-rails (2.0.0)
sqlite3 (1.3.8)
stringex (1.2.2)
thor (0.18.1, 0.14.6)
thread_safe (0.1.2)
tilt (1.4.1)
tinymce-rails (3.5.8.3)
treetop (1.4.15)
turbolinks (1.3.0)
turn (0.9.6)
tzinfo (0.3.37)
uglifier (2.2.1)
vegas (0.1.11)
warden (1.0.6)
xml-simple (1.1.2)
yamler (0.1.0)
请指教。