Adding project nature capability, so syntax is only generated and suggestions determined if a project is marked as a substeps project
Updating nature icon, and ensuring it shows up if this is a substeps project
Prevent substeps features from being executed if the substeps nature isn't present on the project
Stu: Updating substeps property page to allow users to toggle substeps nature
Feature folders now have the substeps launch shortcut enabled
Feature folders can now be executed
Merge pull request #37 from stuforbes/master

Substeps nature and folder execution