title: ImportError: No module named bootstrap3 even while using virtualenv
body: <p>After installing bootstrap3 by</p>
  
  <pre><code>$ pip install django-bootstrap3
  </code></pre>
  
  <p>while my <code>virtualenv</code> was active. i.e.</p>
  
  <p><code>(venv)deathstroke@Batcomputer:~/Documents/DjangoProjects/venv/bin$ pip install django-bootstrap3</code></p>
  
  <p>However, the following error is given -</p>
  
  <pre><code>Traceback (most recent call last):
    File "manage.py", line 10, in &lt;module&gt;
      execute_from_command_line(sys.argv)
    File "/home/deathstroke/Documents/DjangoProjects/venv/local/lib/python2.7/site-packages/django/core/management/__init__.py", line 338, in execute_from_command_line
      utility.execute()
    File "/home/deathstroke/Documents/DjangoProjects/venv/local/lib/python2.7/site-packages/django/core/management/__init__.py", line 312, in execute
      django.setup()
    File "/home/deathstroke/Documents/DjangoProjects/venv/local/lib/python2.7/site-packages/django/__init__.py", line 18, in setup
      apps.populate(settings.INSTALLED_APPS)
    File "/home/deathstroke/Documents/DjangoProjects/venv/local/lib/python2.7/site-packages/django/apps/registry.py", line 85, in populate
      app_config = AppConfig.create(entry)
    File "/home/deathstroke/Documents/DjangoProjects/venv/local/lib/python2.7/site-packages/django/apps/config.py", line 119, in create
      import_module(entry)
    File "/usr/lib/python2.7/importlib/__init__.py", line 37, in import_module
      __import__(name)
  ImportError: No module named bootstrap3
  </code></pre>
  
  <p>when I run <code>import bootstrap3</code> in the shell, it works.</p>
  
  <p>Why doesn't my Django app find or recognize it?</p>