Easing off the dependencies (Phalcon, PHPUnit)

Current version is impossible to install with Phalcon 1.3 and I assume until 2.0 the API is not changing dramatically. Let's have support for ongoing releases. 
PHPUnit API is also not going anywhere between minor versions.
Merge pull request #129 from ianbytchek/patch-2

Easing off the dependencies (Phalcon, PHPUnit)