Added the ability to serialise themes. Added a simple test. Needs more work to verify that the output is correct.
Fixed the default theme's serialisation. You should now be able to serialise the default theme without any errors.
Merge branch 'master' of github.com:beautify/beautify-ios into serialisation

Conflicts:
	Beautify.xcodeproj/project.pbxproj
Merge branch 'master' of github.com:beautify/beautify-ios into serialisation
Moved some tests into the test helper class.
Merge pull request #120 from ChrisGrant/serialisation

Added serialization to the project.