Reorganized sample project.
Added unit testing target.
Added Specta and Expecta for testing, along with a failing unit test.
Added initial specs for initialization, centering, sizes, and widths / heights.
Added first set of superview edge specs.
Updated travis config to include scheme with tests.
Added workspace to repo, added pod install command to Travis config.
Added Travis before_install to update Cocoapods
Merge pull request #28 from frosty/adding-tests

Adding unit tests - work in progress!