Also installing Ruby tools
Let ${perl:Depends} handle Perl dependencies
Update MANIFEST
pass --verbose to cpanm
I think I figured out what's up with libzmq on travis
Move test support code inside t/ again

Now it works with `make test` as well. This closes #25
Reorganize tests to match units under test
Uniformize test running as __PACKAGE__->runtests
Name test modules after their filenames
Move test support code to t::Analizo::Test namespace
added new metric "Change Cost" and a new visualization "DSM"

* The file "MANIFEST" was updated
* New dependency, Perl module "Graph::Writer::DSM"
* Prefer to inherit from t::Analizo::Test::Class instead Test::Class in
  the Unit tests
* Added 2 new sample projects under t/samples

The Debian package for "Graph::Writer::DSM" is ongoing, while it's not
ready you can download from the link above:

* http://analizo.org/pub/Development/ActionItem34/libgraph-writer-dsm-perl_0.004-1_all.deb

(http://analizo.org/Development/ActionItem34)