Added some files & dirs to .gitignore, added VirtualBox as a pre-req to avoid 'Vagrant could not detect VirtualBox\!' error on 'vagrant up'
Added pip install django-crispy-forms to avoid 'django.core.exceptions.ImproperlyConfigured: ImportError crispy_forms: No module named crispy_forms' error when doing './manage.py syncdb --all'
Added note about username/password
Fix instructions for last step './manage.py reload' => './manage.py load_project'
Added comment about switching to root before using ./manage.py to avoid permission denied errors
Merge pull request #2 from xbrowse/bw2_fixes_while_getting_started

minor edits to bootstrap.sh, README.md, .gitignore based on going through README steps for the 1st time