require rails 3.1+ and fix description in README

README.md

@@ -1,6 +1,6 @@
 # ember-rails  [![Build Status](https://secure.travis-ci.org/keithpitt/ember-rails.png)](http://travis-ci.org/keithpitt/ember-rails) [![Dependency Status](https://gemnasium.com/emberjs/ember-rails.png)](https://gemnasium.com/emberjs/ember-rails)
 
-ember-rails allows you to include [Ember.JS](http://emberjs.com/) into your Rails 3.x application.
+ember-rails allows you to include [Ember.JS](http://emberjs.com/) into your Rails 3.1+ application.
 
 The gem will also pre-compile your handlebars templates when building your asset pipeline. It includes development and production copies of Ember.
 

ember-rails.gemspec

@@ -7,14 +7,14 @@ Gem::Specification.new do |s|
   s.version     = Ember::Rails::VERSION
   s.platform    = Gem::Platform::RUBY
   s.authors     = ["Keith Pitt", "Rob Monie", "Joao Carlos", "Paul Chavard"]
-  s.email       = ["me@keithpitt.com"]
+  s.email       = ["me@keithpitt.com", "paul@chavard.net"]
   s.homepage    = "https://github.com/emberjs/ember-rails"
-  s.summary     = "Ember for Rails 3.x"
+  s.summary     = "Ember for Rails 3.1+"
 
   s.add_dependency "execjs", [">= 1.2"]
-  s.add_dependency "railties", [">= 3.0"]
+  s.add_dependency "railties", ["~> 3.1"]
 
-  s.add_development_dependency "rails", [">= 3.0"]
+  s.add_development_dependency "rails", ["~> 3.1"]
 
   s.files = %w(README.md) + Dir["lib/**/*", "vendor/assets/**/*"]