Fix for #184
Update documentation link
Update dependancies
Update dependancies
Add ability to output link to latest Bootstrap/jQuery CDN
Fix typo
Update bootstrap to 3.1.1
Implement Panels
Update readme
Update readme with info about the CDN helper.
Update tests so that they all include _start
Fix typo
Start accordions
Implement accordions
Update readme
Update composer
Update readme to state correct bootstrap version
Add remove_class() method in Helpers class.

This method removes the given value to an array.
Deemphasize's button shouldn't have 'btn-default' CSS class.

Regression introduces in commit 2b09f06 and referenced in issue #184
Add one more assert for deemphasize's button test to ensure that 'btn-default' CSS class is removed.