Bootstrap-transfer doesn't support <option> tag values with spaces

[cdeyoung]

As is, Bootstrap-transfer doesn't support tag values with spaces. For example, if you have the value attribute "test me" and run that through bootstrap-transfer, what you'll get is a tag that looks like this:

Test Me

And only "test" will be sent to the server.

In order to support values that have spaces, you'll need to change line 112 in bootstrap-transfer.js from:

source[i].append('<option ' + selected + 'value=' + e[0].value + '>' + e[0].content + '</option>');

to this:

source[i].append('<option ' + selected + 'value="' + e[0].value + '">' + e[0].content + '</option>');

Notice the double quotes in the value= section?

Again, great plugin with just a couple of minor issues.