No compatible versions for sass gem

Hi,

Just tried to install your gem. Getting the following error. Kinda new to rails (first project..)...

C:\Rails\Ruby1.9.3\bin\ruby.exe -e $stdout.sync=true;$stderr.sync=true;load($0=ARGV.shift) C:/src/bott.ly/bin/bundle install
Updating https://github.com/zakelfassi/sass-rails
Fetching gem metadata from http://rubygems.org/.......
Fetching gem metadata from http://rubygems.org/..
Resolving dependencies...
Bundler could not find compatible versions for gem "sass":
  In Gemfile:
    sass-rails (>= 0) x86-mingw32 depends on
      sass (~> 3.3.4) x86-mingw32

    sass (3.2.14)

Here's my gemfile:

source "http://rubygems.org"

gem "rails", "4.0.0"
gem "mongoid"
gem "coffee-rails", "~> 4.0.0"
gem "jquery-rails"
gem "turbolinks"
gem "jbuilder", "~> 1.2"
gem 'nested_form'
gem 'rubber', github: "johnnyshields/rubber"
gem 'newrelic_rpm'
gem 'unf'
gem 'jquery-turbolinks'

group :assets do
    gem "uglifier", ">= 1.3.0"
    gem "therubyracer", platforms: :ruby
    gem 'execjs'
end

group :development do
  gem "guard-rspec"
  gem "pry"
  gem "quiet_assets"
  gem "thin"
end

group :development, :test do
  #gem "rspec-rails"
  gem "factory_girl_rails"
end

group :test do
  gem "mongoid-rspec"
  gem "ffaker"
  gem "simplecov", require: false
  gem "database_cleaner"
  gem "rb-inotify", "~> 0.9"
end

gem "sass-rails", :git => 'https://github.com/zakelfassi/sass-rails'
gem "bootstrap-sass"
gem 'bootflat-rails'
#gem "font-awesome-sass-rails"
gem "simple_form", github: "plataformatec/simple_form"
gem "devise", "~> 3.0.0"
gem "cancan"
gem "omniauth"
gem "omniauth-facebook"
gem "omniauth-twitter"
gem "hashugar", github: "alex-klepa/hashugar"
gem 'open4'

Thanks for any help!

Cheers

zakelfassi / Bootflat-Rails

No compatible versions for sass gem #11