Cleaned up tasks to be consistent

* Broke out main into simple tasks.
* Restructured some tasks to multi-line for readability.  Consistent with other
tasks.
Ability to override the box name
Merge pull request #21
Switch the vagrant VM to a Vagrant cloud one
Add support for the Debian official package. Close #11
Merge pull request 22

Add the possibility to override the Virtualbox name for test.

Conflicts:
	Vagrantfile
Update the README with a section about testing
Fill the CHANGELOG
Add more flexibility for SSL certificate support.