Added guzzle dependancy for REST calls
Added basic REST suppor for bibs
Added REST support for items
Merge branch 'master' into php-alma-2

Conflicts:
	composer.json
	composer.lock
	src/BCLib/Alma/AlmaCache.php
Updated composer dependencies
Added rudimentary exceptions
Add holdings info to item
Moved caching to BibServices
Keep object creation in AlmaServices
Simplified caching to use only one set of methods
Merge branch 'master' of https://github.com/BCLibraries/php-alma