Fix for small & large input groups

[mxmauro]

Hi,

In bootstrap-chosen.less, just above @media please add this fix:

.input-group-lg  .chosen-single {
    .input-lg();
}
.input-group-sm  .chosen-single {
    .input-sm();
}

In order to make CSS work with small and large input groups.

Regards.

[Soundvessel]

See my fix for input groups, form group, and more here #31 (comment)