Fixes #84 and #125

[h3adache]

Removed data parameter.
Use option parameter for "no results found text"

Note:

• This patch is only for the jquery version
• I don't really like how I did the no results found text since it's not really obvious what needs to be set.
  I know this can just be something for documentation but would be nice if someone comes up with a more 'friendly' way.

[aziz]

I like it. It would be even better if jQuery and Prototype share similar API. there should be an identical way of initializing chosen select.

[pfiller]

Thanks, @h3adache -- I've merged and included a similar array for the prototype version.