Updated callback parameter to object with `value` and `text` property
Show add item link even for prefix matches
Prototype merge
Fixed adding options
Add <option /> with selected attribute

Add <option /> with selected attribute instead of selecting it
afterwards with JS
Updated the way for adding items using a custom callback
removed debug console.log
Updated examples
Fixes issues with adding options in prototype version
Added option for adding values by keyboard
persistent_create_option was not implemented in prototype version
removed console.log
updated coffeescript and package files with new changes
Squashed commit of the following:

commit 7de0007b855c464f9a26425afb85e3fe4daf0df5
Merge: 10fb211 80f3985
Author: Koen Punt <koen@koenpunt.nl>
Date:   Thu Nov 1 11:32:06 2012 +0100

    Merge branch 'gh7_empty_select_should_show_input' into rebase

commit 10fb2119954a7129e3214985d679f3e957f1bd0a
Author: Koen Punt <koen@koenpunt.nl>
Date:   Thu Nov 1 11:30:04 2012 +0100

    Merged koenpunt/master onto harvesthq/master

commit 80f3985a0ea3b8b56898b26305d921bc599c9e3e
Author: Koen Punt <koen@koenpunt.nl>
Date:   Thu Nov 1 11:02:57 2012 +0100

    fixes #7, select without options will now show input on click

commit c481fedec32a2b2557b3fb754c7718c10954ea2e
Author: Patrick Filler <pf@patrickfiller.com>
Date:   Tue Oct 9 14:20:10 2012 -0700

    Make sure single text link gets negative tab index. Fixes issue with tabbing backwards.

commit 9085750ecd023d7a2a7c48c20ab70cc0309635b6
Author: Patrick Filler <pf@patrickfiller.com>
Date:   Tue Oct 9 10:21:04 2012 -0700

    Fixes tab order issues with single Chosen.
Fixed some minor issues after complete rebase
show_create_option is now only called from winnow_results
fixed issue where adding of duplicate items was possible
added option to skip no results message, fixes #20
create_option_text can now also be supplied as data-attribute
missing comma
trigger change event after adding fixes #31 #16
moved examples for create option
fixed issue where is was not possible to select the create option using the keyboard