Removed caching from controllers
Updated Error template to use new WorldCat\Discovery\Error class
Created view for article content which uses WorldCat\Discovery\Article
Updated gitignore
Added new development dependencies and updated version of the
worldcat/discovery library app uses
Updated version of worldcat/discovery that the demo app requires
Added views for an article
Added function for retrieving fulltext link from WorldCat Knowledge base
Added helper function and configuration to check and retrieve link for
fulltext from WorldCat Knowledgebase
Added ability to see electronic material links
Updated Composer file to use worldcat/discovery library 0.9.3 or greater