[Insight-developers] using the tests as examples

[Tessa Sundaram]

I forgot to mention this during yesterday's discussion of the book and 
simplifying the Examples/, although I think it might have come up at an 
earlier meeting.  A lot of the testing code is very straightforward, and 
would actually lend itself easily to basic "examples" of ITK.  When I'm 
trying to figure out how to use unfamiliar classes, that's one of the 
places I look.  

In a way, it's the closest thing to uniform "documentation" - it 
demonstrates how to define a particular object, what parameters are 
necessary, and what other functions need to be called before output can 
be obtained.  It's also pretty thorough - there are tests for just about 
everything, while there may not be much corresponding documentation.

-ts