bumping version for new gem release and updating README
adding gem version icon to README
fixing typo in gemspec
updating Gemfile.lock with latest version
Move the Bootstrap helpers into the helpers sub-directory
Implement a NestedFormBuilder based on the nested_form gem
Trigger the after_nested_form_callbacks method
give bootstrap_nested_form_for and bootstrap_form_for the same method def
Use String interpolation for field_options[:left] so a nil doesn't cause an exception
Test if fields_options[:label_col] is present instead of whether it exists
Merge pull request #66 from bootstrap-ruby/nested_form_support

Nested form support
Put errors_on helper back since it accidentally got removed
Dont reset additional classes on the form-group
Add test for additional classes on form_group
Merge pull request #80 from rzane/dont-reset-form-group-class

Dont reset additional classes on the form-group
updating changelog for #80
Fixes an issue when passing a label to a control while using
bootstrap_form_tag (#82).

I'm not particularly happy with these changes as we're passing around
another option (id) that's only used in this situation.
updating changelog for #82
README and CHANGELOG updates for nested_form support
form_group doesn't require name when passing params