Introduced an optional item separator in the menu
Introduced the hideMenu option in the
externally available functions
Added the ability to add checkboxes
instead of icons
Made it possible to add classes to the menu item
content span.
Added the possibility to align the menu
to the right of the button
Merge branch 'headermenu-external-hide'
Merge branch 'headermenu-checkboxes'
Merge branch 'headermenu-content-class'

Conflicts:
	plugins/slick.headermenu.js
Merge branch 'headermenu-align-right'