Improvements for Bootstrap 3.0 support. Includes:

- Fixed problem with inputs of type file, that were displayed inside an input text element
- Added support for Django Form `required_css_class` and `error_css_class`
- Added CSS class `multiple-checkbox`, to be used to easily hide `<li>` elements in multiple checkboxes from your styles file
Added last updates from upstream
added some build created dirs to .gitignore
Use isinstance for checking widget types
Added bootstrap column number configuration
Update example with bootstrap 3
Update example project

Add

* multiple choice
* multiple checkbox
Merge branch 'eureka' of https://github.com/caumons/django-bootstrap-form into caumons-eureka

Conflicts:
	.gitignore
Update README and add CHANGES.txt
Merge branch 'check_widget_type' of https://github.com/ptrck/django-bootstrap-form into ptrck-check_widget_type

Conflicts:
	bootstrapform/templatetags/bootstrap.py
Merge pull request #39 from yourowndisaster09/master

Added bootstrap column number configuration