Usability improvements
- Projects can now be generated from *.zip skeletons (so that skeletons can be more easily shared and transferred)
- zip skeletons can be "registered" on a per-user basis, so that users can snapshot the skeleton once and afterwards refer to it without needing to know its exact path.
- Post-generation scripts implemented, so that users can do things like git-init a newly generated project.
- More samples added