Removed duplicated code from swt image (slipped through my hands)
added docs for the 3-parameter call.  How to view the compiled docs in shoes??
fixed missing 'the'
Merge pull request #366 from DaveCollinsJr/master

added docs for the 3-parameter call.  How to view the compiled docs in shoes?
Fixed triggering of gui flushes after after download

* Using Display.asyncExec
* Redrawing Aspect now needs to have a reference to a display
  because calling Shoes.display does not working from in there
  (presumably because it is in the non UI thread which has no
  access to Display that way)