Support <option> tags

[achimha]

The original select2 can work with <option> tags below it. Example:

<select id="foo">
  <option value="1">First option</option>
  <option value="2">Second option</option>
</select>

And then turn it into a select2 control:

$("#optimize").select2({ minimumResultsForSearch: -1 });

I think this control should support the same markup:

<select2 id="foo">
  <option value="1">First option</option>
  <option value="2">Second option</option>
</select2>

It could be easily done using <ng-content></ng-content>.

[achimha]

I have this basically working and will provide a PR once the current ones are in.

[NejcZdovc]

Ok, sound's good. Will merge current PR's today.

[achimha]

PR: https://github.com/NejcZdovc/ng2-select2/pull/67