update shoulda to edge. fixes deprecations

Gemfile

@@ -34,7 +34,7 @@ end
 
 group :development, :test do
   gem 'rspec-rails'
-  gem 'shoulda'
+  gem "shoulda", "~> 3.0.0.beta2"
   gem 'capybara'
   gem 'autotest'
   gem 'autotest-rails'

Gemfile.lock

@@ -200,7 +200,11 @@ GEM
       ffi (>= 1.0.7)
       json_pure
       rubyzip
-    shoulda (2.11.3)
+    shoulda (3.0.0.beta2)
+      shoulda-context (~> 1.0.0.beta1)
+      shoulda-matchers (~> 1.0.0.beta1)
+    shoulda-context (1.0.0.beta1)
+    shoulda-matchers (1.0.0.beta3)
     simplecov (0.5.3)
       multi_json (~> 1.0.3)
       simplecov-html (~> 0.5.3)
@@ -265,7 +269,7 @@ DEPENDENCIES
   ruby-debug19
   sass-rails (~> 3.1.0)
   seed-fu!
-  shoulda
+  shoulda (~> 3.0.0.beta2)
   simplecov
   six
   sqlite3