add namespace back into example project

[TheMaverickProgrammer]

One user wanting to use Swoosh wasn't sure what functions and utilities belonged to swoosh because at the top of every file I include using namespace swoosh::.

I should be explicit with the name-spacing.

I also have the opportunity to make the namespace shorter like swsh for sanity's sake.

[TheMaverickProgrammer]

namespace is now sw::. Done in swoosh2 branch.