title: undefined method `environment' for nil:NilClass when importing Bootstrap
body: <p>I've been trying to import Bootstrap into my rails app and I'm not quite sure what's going wrong. I've had it working before, but I did a 'bundle update' and destroyed some dependencies (I think). I've seemingly fixed everything... except for Bootstrap.</p>
  
  <p>I've tried removing and re-entering the 'bootstrap-sass' gem... I can't really figure out where the error is. </p>
  
  <p>Thanks for the help!</p>
  
  <p>Gemfile  </p>
  
  <pre><code>source 'https://rubygems.org'
  ruby '2.0.0'
  
  gem 'rails', '4.0.1'
  gem 'bootstrap-sass'
  gem 'bcrypt-ruby', '3.1.2'
  gem 'faker', '1.1.2'
  
  group :development, :test do
  
    gem 'sqlite3', '1.3.8'
    gem 'rspec-rails'
  end
  
  group :test do
    gem 'selenium-webdriver', '2.35.1'
    gem 'capybara', '2.1.0'
    gem 'factory_girl_rails', '4.2.1'
    gem 'database_cleaner', github: 'bmabey/database_cleaner'
  end
  
  gem 'sass-rails'
  gem 'uglifier', '2.1.1'
  gem 'coffee-rails', '4.0.1'
  gem 'jquery-rails', '3.0.4'
  gem 'turbolinks', '1.1.1'
  gem 'jbuilder', '1.0.2'
  
  group :doc do
    gem 'sdoc', '0.3.20', require: false
  end
  
  group :production do
    gem 'pg', '0.15.1'
    gem 'rails_12factor', '0.0.2'
  end
  </code></pre>
  
  <p>Gemfile.lock</p>
  
  <pre><code>GIT
    remote: git://github.com/bmabey/database_cleaner.git
    revision: 35bd646903fc56af185a9fa9e360c568bb56756e
    specs:
      database_cleaner (1.2.0)
  
  GEM
    remote: https://rubygems.org/
    specs:
      actionmailer (4.0.1)
        actionpack (= 4.0.1)
        mail (~&gt; 2.5.4)
      actionpack (4.0.1)
        activesupport (= 4.0.1)
        builder (~&gt; 3.1.0)
        erubis (~&gt; 2.7.0)
        rack (~&gt; 1.5.2)
        rack-test (~&gt; 0.6.2)
      activemodel (4.0.1)
        activesupport (= 4.0.1)
        builder (~&gt; 3.1.0)
      activerecord (4.0.1)
        activemodel (= 4.0.1)
        activerecord-deprecated_finders (~&gt; 1.0.2)
        activesupport (= 4.0.1)
        arel (~&gt; 4.0.0)
      activerecord-deprecated_finders (1.0.3)
      activesupport (4.0.1)
        i18n (~&gt; 0.6, &gt;= 0.6.4)
        minitest (~&gt; 4.2)
        multi_json (~&gt; 1.3)
        thread_safe (~&gt; 0.1)
        tzinfo (~&gt; 0.3.37)
      arel (4.0.2)
      atomic (1.1.15)
      bcrypt-ruby (3.1.2)
      bootstrap-sass (3.1.1.0)
        sass (~&gt; 3.2)
      builder (3.1.4)
      capybara (2.1.0)
        mime-types (&gt;= 1.16)
        nokogiri (&gt;= 1.3.3)
        rack (&gt;= 1.0.0)
        rack-test (&gt;= 0.5.4)
        xpath (~&gt; 2.0)
      childprocess (0.5.1)
        ffi (~&gt; 1.0, &gt;= 1.0.11)
      coffee-rails (4.0.1)
        coffee-script (&gt;= 2.2.0)
        railties (&gt;= 4.0.0, &lt; 5.0)
      coffee-script (2.2.0)
        coffee-script-source
        execjs
      coffee-script-source (1.7.0)
      diff-lcs (1.2.5)
      erubis (2.7.0)
      execjs (2.0.2)
      factory_girl (4.2.0)
        activesupport (&gt;= 3.0.0)
      factory_girl_rails (4.2.1)
        factory_girl (~&gt; 4.2.0)
        railties (&gt;= 3.0.0)
      faker (1.1.2)
        i18n (~&gt; 0.5)
      ffi (1.9.3)
      hike (1.2.3)
      i18n (0.6.9)
      jbuilder (1.0.2)
        activesupport (&gt;= 3.0.0)
      jquery-rails (3.0.4)
        railties (&gt;= 3.0, &lt; 5.0)
        thor (&gt;= 0.14, &lt; 2.0)
      json (1.8.1)
      mail (2.5.4)
        mime-types (~&gt; 1.16)
        treetop (~&gt; 1.4.8)
      mime-types (1.25.1)
      mini_portile (0.5.2)
      minitest (4.7.5)
      multi_json (1.9.0)
      nokogiri (1.6.1)
        mini_portile (~&gt; 0.5.0)
      pg (0.15.1)
      polyglot (0.3.4)
      rack (1.5.2)
      rack-test (0.6.2)
        rack (&gt;= 1.0)
      rails (4.0.1)
        actionmailer (= 4.0.1)
        actionpack (= 4.0.1)
        activerecord (= 4.0.1)
        activesupport (= 4.0.1)
        bundler (&gt;= 1.3.0, &lt; 2.0)
        railties (= 4.0.1)
        sprockets-rails (~&gt; 2.0.0)
      rails_12factor (0.0.2)
        rails_serve_static_assets
        rails_stdout_logging
      rails_serve_static_assets (0.0.2)
      rails_stdout_logging (0.0.3)
      railties (4.0.1)
        actionpack (= 4.0.1)
        activesupport (= 4.0.1)
        rake (&gt;= 0.8.7)
        thor (&gt;= 0.18.1, &lt; 2.0)
      rake (10.1.1)
      rdoc (3.12.2)
        json (~&gt; 1.4)
      rspec-core (2.14.8)
      rspec-expectations (2.14.5)
        diff-lcs (&gt;= 1.1.3, &lt; 2.0)
      rspec-mocks (2.14.6)
      rspec-rails (2.14.1)
        actionpack (&gt;= 3.0)
        activemodel (&gt;= 3.0)
        activesupport (&gt;= 3.0)
        railties (&gt;= 3.0)
        rspec-core (~&gt; 2.14.0)
        rspec-expectations (~&gt; 2.14.0)
        rspec-mocks (~&gt; 2.14.0)
      rubyzip (0.9.9)
      sass (3.3.2)
      sass-rails (4.0.1)
        railties (&gt;= 4.0.0, &lt; 5.0)
        sass (&gt;= 3.1.10)
        sprockets-rails (~&gt; 2.0.0)
      sdoc (0.3.20)
        json (&gt;= 1.1.3)
        rdoc (~&gt; 3.10)
      selenium-webdriver (2.35.1)
        childprocess (&gt;= 0.2.5)
        multi_json (~&gt; 1.0)
        rubyzip (&lt; 1.0.0)
        websocket (~&gt; 1.0.4)
      sprockets (2.12.0)
        hike (~&gt; 1.2)
        multi_json (~&gt; 1.0)
        rack (~&gt; 1.0)
        tilt (~&gt; 1.1, != 1.3.0)
      sprockets-rails (2.0.1)
        actionpack (&gt;= 3.0)
        activesupport (&gt;= 3.0)
        sprockets (~&gt; 2.8)
      sqlite3 (1.3.8)
      thor (0.18.1)
      thread_safe (0.2.0)
        atomic (&gt;= 1.1.7, &lt; 2)
      tilt (1.4.1)
      treetop (1.4.15)
        polyglot
        polyglot (&gt;= 0.3.1)
      turbolinks (1.1.1)
        coffee-rails
      tzinfo (0.3.39)
      uglifier (2.1.1)
        execjs (&gt;= 0.3.0)
        multi_json (~&gt; 1.0, &gt;= 1.0.2)
      websocket (1.0.7)
      xpath (2.0.0)
        nokogiri (~&gt; 1.3)
  
  PLATFORMS
    ruby
  
  DEPENDENCIES
    bcrypt-ruby (= 3.1.2)
    bootstrap-sass
    capybara (= 2.1.0)
    coffee-rails (= 4.0.1)
    database_cleaner!
    factory_girl_rails (= 4.2.1)
    faker (= 1.1.2)
    jbuilder (= 1.0.2)
    jquery-rails (= 3.0.4)
    pg (= 0.15.1)
    rails (= 4.0.1)
    rails_12factor (= 0.0.2)
    rspec-rails
    sass-rails
    sdoc (= 0.3.20)
    selenium-webdriver (= 2.35.1)
    sqlite3 (= 1.3.8)
    turbolinks (= 1.1.1)
    uglifier (= 2.1.1)
  </code></pre>