Fix typo.
Remove pre-existing cursor on hover. Fixes #580.
fix: don't render if no element exists

refs twitter/typeahead.js#218 and twitter/typeahead.js#316
Merge pull request #579 from mutewinter/fix_render_with_no_el

Fix render with no element
Merge pull request #583 from jharding/580-reset-cursor-on-hover

Remove pre-existing cursor on hover
Fix return values of adapted dataset.
Rename dataset to bloodhound.
Rename section to dataset.

Conflicts:
	src/typeahead/plugin.js
Support bloodhound instances and update README.