Import Ingy's Test-Simple in bash for basic testing
Basic automated tests for region/target handling

This uses the Test-Simple bash library to support TAP output.  TAP
output means that it works with pretty much any testing framework.
prove is a common way to run tests:

    prove -v test/
Add a `make test` target
Merge pull request #128 from MullinsLab/region-tests

Basic automated tests for region/target handling