Updated license: dual licensed with Apache 2 and BSD 3-Clause. Fixed issues with doubling "select all" options by using rebuild. Added buttonTitle option, see #138.

Updated readme for the new filterBehavior option.

Updated readme and demonstration files.

Added the selectAllValue option to change the value by which the select
all option is identified. Cosmetics.

Updated documentation: includeSelectAll, selectAllText, selectedClass,
enabledFiltering and filterPlaceholder options. Updated the README.
moved the filter initialization to the buildDropdown method. The rebuild
method has to remove the search field, too, otherwise it will be
duplicated.

The buttonText function will get the select as second parameter.

Select or deselect an specific option by its value.

Added the CSS class "multiselect" do add additional styling using CSS.
Fixed #23. Added a possible solution for mobile devices.

Added a rebuild method suggested in Issue #19. Additionally added
documentation for Knockout JS - see Issue #17.

Added support for adding a maximum height property to the dropdown list.
Renamed some options.

Added support for adding a maximum height property to the dropdown list.
Renamed some options.

Updated README and index.

Updated documentation concerning the new 'onchange' option and added a
refresh method.

Added the possibility to destroy/unbind the plugin. Adjusted link and
label style for the dropdown. Minor changes.

Added Roadmap / Todo. Current solution for multiple selects is not
usable for mobile devices with touchscreen.

The dropdown butotn can now be customized by using classes. Removed the
'none' option and renamed the 'selected' option to 'text'.

Added license to README.