Add Results#entry_name method for kaminari compatibility

From kaminari 0.16.0, `page_entries_info` requires paginatable objects
to have `#entry_name` method. SearchKick::Results class should also have
it so it'll play nice together with kaminari.
Merge branch 'yuki24-add-entry-name-to-results-class'
Fix no records import logging exception
Expose searchkick_import and searchkick_index_options
Added timeout method
Define reindex_async regardless of callbacks
Added support for Active Job
Updated readme
Added tests for Active Job
Better skip
Quiet logger
Just check for ActiveJob
Added more Active Record tests
Merged master
Fixed randomly failing suggestion test
Fixed random test errors
Merge branch 'master' into activejob
Revert "Fix no records import logging exception"

This reverts commit 08fbc1d697df653582313cd7995082928012437a.
Do not try to import empty records array
Fixed import with no records - fixes #279 and fixes #282