Update document view
Merge branch 'master' of github.com:scriptotek/katapi

Conflicts:
	app/models/Document.php
Logging & error handling
Make output the same whether it comes from local DB or from SRU

And output dates the same way whether they're at root or in a subdocument such as 'holdings'. Added accessor/mutuator to the Document model and overridden attributesToArray. Current version is brittle, since it depends on fixed attribute names.
Tweak documents.show view
Updating readme and landing page