Gemfile in timespan-0.3.2 vs Gemfile in timespan-0.4.0

@@ -6,11 +6,13 @@
 gem 'xduration', '~> 2.2'
 
 group :test, :development do
   gem "rspec", 		">= 2.8.0"
   gem 'rails', 		'~> 3.2'
-  gem 'mongoid',  '~> 2.4'
-  gem 'bson',     '~> 1.6'
+  gem 'mongoid',  '>= 2.4'
+  # gem 'bson',     '>= 1.6'
+
+  # gem 'mongoid',  '~> 3.0.0.rc', :git => 'git://github.com/mongoid/mongoid.git'  
   # gem 'i18n'
 end
 
 group :development do
   gem "rdoc", 		">= 3.12"