warning: pip install git: no previously-included directories found matching 'example'

[b1]

Just warning about dir 'examples'
Install into virtualenv --no-site-packages

virtualenv --version
1.7.1.2

on Ubuntu 12.04

pip install git+https://github.com/django-debug-toolbar/django-debug-toolbar.git
Downloading/unpacking git+https://github.com/django-debug-toolbar/django-debug-toolbar.git
  Cloning https://github.com/django-debug-toolbar/django-debug-toolbar.git to /tmp/pip-tQ4vYP-build
  Running setup.py egg_info for package from git+https://github.com/django-debug-toolbar/django-debug-toolbar.git

    no previously-included directories found matching 'example'
Installing collected packages: django-debug-toolbar
  Running setup.py install for django-debug-toolbar

    no previously-included directories found matching 'example'
Successfully installed django-debug-toolbar
Cleaning up...