Readme adjustments

Some README adjustments about the SWT requirement and current state.

@jasonrclark would love a proof read, didn't know where to exactly put the SWT stuff.

Also I say something about "regular" releases. Got the feeling at least @jasonrclark also wanted to get something out hopefully before Christmas and so do I :) (not the main discussion topic here)

Taking a look at the big PR now. Promised. :)