Multiple attendees can't be added to a CreateMeeting request

[yoloVoe]

Try making a meeting with multiple participants.
Server will reject your request b/c the generated xml will look like this:

<attendees> <ATTENDEE 1> </attendees> <attendees> <ATTENDEE 2> </attendees>
instead of like this:
<attendees> <ATTENDEE 1> <ATTENDEE 2> </attendees>

The former is rejected by the server, which expects only one <attendees> in the xml payload.

Its b/c of how xml2js works:
Leonidas-from-XIV/node-xml2js#428

I can make a quick PR to fix this if this library still has a maintainer.

[brh55]

@gk159yo Feel free to submit a PR, we aren't currently using the library in our current projects, but we do use it for any webex related projects.

[yoloVoe]

PR: #10