added oink in dev mode

Gemfile

@@ -153,4 +153,7 @@ group :development do
 
   # speed up development requests (already pulled into rails 3.2)
   gem 'active_reload'
+
+  # for tracing AR object instantiation and memory usage per request
+  gem 'oink'
 end

Gemfile.lock

@@ -195,6 +195,7 @@ GEM
       heroku (>= 2)
       rails (>= 2)
     highline (1.6.11)
+    hodel_3000_compliant_logger (0.1.0)
     http_accept_language (1.0.2)
     i18n (0.5.0)
     i18n-inflector (2.6.3)
@@ -264,6 +265,9 @@ GEM
     oauth2-provider (0.0.19)
       activesupport (~> 3.0)
       addressable (~> 2.2)
+    oink (0.9.3)
+      activerecord
+      hodel_3000_compliant_logger
     omniauth (1.0.1)
       hashie (~> 1.2)
       rack
@@ -474,6 +478,7 @@ DEPENDENCIES
   newrelic_rpm
   nokogiri (~> 1.5.0)
   oauth2-provider (= 0.0.19)
+  oink
   omniauth (= 1.0.1)
   omniauth-facebook
   omniauth-tumblr

config/initializers/oink.rb

@@ -0,0 +1,3 @@
+if Rails.env == 'development'
+  Rails.application.middleware.use(Oink::Middleware, :logger => Rails.logger)
+end