Add note about debugging tests

- You need to you nose's set_trace to use pdb with nose.
- Also added a note on how to run a specific test.
Use django-bootstrap3 package instead of local bootstrap
Merge pull request #16 from nikolas/django-bootstrap3

Use django-bootstrap3 package instead of local bootstrap
Merge pull request #15 from nikolas/add-debug-note

add note about debugging tests
Add a default gitignore in the project template
Merge pull request #18 from nikolas/add-gitignore

Add a default gitignore in the project template