Added next steps for SampleDemo.
More planning details.
Now using JUnit parameterized tests for the data driven testing. This
simplifies the code and provides an accurate accounting of all the tests
that have been run. The count in JUnit went from less than 100 to around
500 tests. This higher number is an accurate assessment of the number of
tests that have been written.

Also, using TestSuite so multiple test case classes can be run together.