Merge branch 'release/0.4.0' into develop
Ability to allow a custom action for selectable elements.

Allow an element definition for a selectable element to provide a specific
convenience method. This method will select a particular value in the element.
The syntactic sugar is simply adding an "=" to the element friendly name.
Watir-WebDriver convenience method.

A simple method is provided that allows Symbiont to instantiate an
instance of Watir-WebDriver. This provides a bit more convenience
for someone writing a test script, further putting implementation
details within the framework itself.
Cleanup of Symbiont driver startup.
Distinction of browser and driver.
Action added to verify page by title and url.
Allow for method chaining on view.
Factory conditionally checks page verification.
Active reference is now a page reference.
Updated for RSpec 3.
Release of version 0.5.0
Merge branch 'release/0.5.0'