Enhancement Request

According to the the spec - "Always, there SHOULD be a clear UX indicator of what channel an app is joined to.". However, when creating channels it is currently not possible to specify displayMetaData.

Use Case:

1. This would allow the user to see the channel that the Desktop Agent is joined to if it is not one of the system channels.
2. This would also allow the creation of visual channels using the API as opposed just invisible channels.
3. In conjunction with our other request - Allow Desktop Agent To Join Multiple Channels #242 - this would allow a component to not lose user connected channels when the API connects the desktop agent to another channel.

PR: #244