Excited I decided to give it a try.....
This wizard let's you open online (git) verzion or Cached version.
however both versions cause problems:
cached version is pretty old (referencing 1.4 jQuery) and fails with errors,
ENTRY com.aptana.projects 4 0 2011-06-10 00:45:42.917 !MESSAGE Unable to overwrite file during .zip extraction !STACK 1 org.eclipse.core.runtime.CoreException: Failed applying file-template variables
Git based version of the wizard is fine and gets created
however HTML editor reports errors:
Unexpected end of file index.html /test line 54 JS Problem
Horror folks !
UPDATE: filled bug report