Clarify project envisioned purpose in README

[peterblazejewicz]

The project seems to be multi-purpose tool:

• scaffold an item (consuming content)
• scaffold a project (consuming content)
• install/add new item/project (consuming content)
• develop and install new item/new project (enhancing content)
  and it could be better documented in project header and rest of documentation. By consuming I mean using tool by end-user, just like in VS studio to create new project/new item from templates. While enhancing means adding new value to content, just like when adding new template for Item/Project to Side Waffle.
  Thanks!

[sayedihashimi]

Thanks that's a very good suggestion. I will take some time to think about that and figure out how to word it.