Initial implementation of static site building

Also introduced a .ssignore file, which lets users define patterns
to exclude from static building.
Added information about building static sites.

Sem-Ver: feature
Merge branch 'static_build'
Improvements to static site generator

Now does _not_ re-root the 'static' folder. Opening a ticket
to make this more flexible
Minor test improvements
Merge branch 'static_build' of github.com:rosskarchner/shortstack into static_build
using python built-in server to view static site
Update README.rst
Merge pull request #5 from rosskarchner/static_build

Static site generator