Revert "Move example source into a conventional source root location."

This reverts commit c2657807be96bc6aecfc34781ca6963477b1fe29.

If we want to do this, we'll need to do it more systematically to
avoid breaking the build and confusing people who may be used to
finding the solution in a particular place.

- includes @Parameters attribute that allows you to define a template for names of tests, making the test output far easier to follow.

- makes it easier to work on a solution when you can one-step define the source root containing the example.
- one step toward making it easy to run unit tests against example solutions in CI.

- fixes exercism/x-api#59

Define the missing class (with no content)

Signed-off-by: Vincent Demeester <vincent@sbr.pm>

Added track specific documentation

Change hamming test to throw an exception for different strand lengths

Now throws an IllegalArgumentException if the strands are different
lengths.

merge

Added exercise accumulate

Added exercise atbash-cipher

The other track problems follow this convention as well.